Solution When AirMac Express Wi-Fi Won't Connect

Fixing a stuck AirMac Express Wi-Fi connection with a power cycle, or the reset button as a fallback.

How to initialize (reset) AirMac Extreme

The reset button location on AirMac Extreme, plus the soft reset and factory default reset procedures.

AirPods Pro + Android Low Volume Issue Can Be Solved by Resetting

Resetting AirPods Pro was the quickest fix for the low-volume issue when pairing them with an Android phone.

[Amazon CloudSearch] [*Deprecated*: Use the outer message field] Validation error for field 'xxx': Invalid codepoint 1C

The Invalid codepoint 1C error on Amazon CloudSearch, resolved by stripping the u001c character from the JSON.

Run docker system prune --volumes When Getting 'no space left on device' Error with Amazon ECS + Docker

Fixing the no space left on device error on Amazon ECS with docker system prune --volumes.

Amazon Elasticsearch Service 2.3 [script_exception] scripts of type [inline], operation [search] and lang [mustache] are disabled Error

Responding to the Mustache script_exception on Amazon Elasticsearch Service 2.3: drop Mustache or migrate to 5.1+.

Amazon OpenSearch Service Scale-up Does Not Cause Downtime

A record of scaling up an Amazon OpenSearch Service domain and confirming firsthand that it caused no downtime.

Amazon S3 AccessDenied Error with Only arn:aws:s3:::bucket Setting

Fixing an S3 AccessDenied error by adding the object ARN `arn:aws:s3:::bucket/*` alongside the bucket ARN.

Amazon S3 'A conflicting conditional operation is currently in progress against this resource. Please try again.' error

Waiting out the S3 `conflicting conditional operation in progress` error when recreating a bucket with the same name.

CORS Handling for Direct File Upload from Browser to Amazon S3

Resolving CORS preflight errors for direct browser-to-S3 uploads with an S3 CORS configuration JSON.

Amazon WorkSpaces 'Unable to login' Error and 'Unhealthy' Status Troubleshooting

Recovering an Amazon WorkSpaces instance stuck in 'Unhealthy' status with an 'Unable to login' error via rebuild.

Solved Android 10 Tethering Issue

Fixing broken tethering on Android 10 by tweaking the IIJmio APN configuration.

[Android] ActionBarSherlock Jar mismatch! Fix your dependencies error

Fixing duplicate android-support-v4.jar conflicts when importing ActionBarSherlock.

[Android] IllegalStateException: Cannot add header view to list : setAdapter has already been called.

Call addHeaderView / addFooterView before setListAdapter to avoid IllegalStateException in ListFragment.

[Android][AdMob] Error parsing XML: unbound prefix error

Fix an 'unbound prefix' XML error when adding AdMob to an Android layout by declaring xmlns:ads.

[Android] Application#onTerminate() does not work on actual devices

Application#onTerminate() never fires on production Android devices — a short note with references.

[Android] Application#onCreate is Called Before Activity, Service, and Receiver Objects Are Created

Application#onCreate fires before Activities, Services, and Receivers — placing analytics there can skew session counts.

[Android] RuntimeException on AsyncTask : NullPointerException on doInBackground

Wrap doInBackground in try/catch, return null on failure, and handle it in onPostExecute to stop AsyncTask crashes.

[Android] RuntimeException: Can't create handler inside thread that has not called Looper.prepare()

Fixing the Looper.prepare() crash caused by touching the UI inside AsyncTask#doInBackground — move UI work to onPostExecute.

[Android][Eclipse] Cannot build project until build path errors are resolved

Fixing Eclipse's build path error after importing an Android project by ticking Android x.x under Order and Export.

[Android] How to Configure Eclipse (Mac) Emulator to Connect to the Internet

Configuring the Android emulator's DNS in Eclipse on Mac to restore internet connectivity.

[Android] Error "The project was not built due to incomplete build path."

Resolving Eclipse's "incomplete build path" error during Android development via Order and Export.

[Android] Facebook Authentication Error: com.facebook.FacebookOperationCanceledException: remote_app_id does not match stored id

Fixing the Facebook "remote_app_id does not match stored id" error by logging the correct Key Hash from the running Android app.

[Android] Facebook SDK Error: Failure delivering result ResultInfo{who=null, request=64206, result=0, data=null} to activity {com.example/com.facebook.LoginActivity}: java.lang.NullPointerException

The Facebook SDK for Android v3.0 login NullPointerException is a known bug fixed by upgrading to v3.0.1.

[Android] NoSuchMethodError with getActionBar()

To support Android 2.3, use ActionBarSherlock's getSupportActionBar() instead of getActionBar() to avoid NoSuchMethodError.

[Android] Points to Check When Google Play Shows 'Your device isn't compatible with this version'

How to fix "Your device isn't compatible with this version" on Google Play by tuning uses-feature settings.

[Android] INSTALL_PARSE_FAILED_NO_CERTIFICATES error

The simplest fix for INSTALL_PARSE_FAILED_NO_CERTIFICATES is to build a signed APK and install that instead.

[Android] Error Occurs During Twitter Authentication When Time is Not Set Correctly

A wrong device clock can break Android Twitter authentication with a null challenge error.

[Android] Unable to create external cache directory error

The Unable to create external cache directory error was fixed by declaring WRITE_EXTERNAL_STORAGE.

[Android] Unable to find explicit activity class {activity name}; have you declared this activity in your AndroidManifest.xml?

How to resolve the Android 'Unable to find explicit activity class' error by declaring the activity in AndroidManifest.xml.

[Android] Waiting for Debugger - Application XXX is waiting for the debugger to Attach Error

Restarting Eclipse fixed the Android 'Waiting for Debugger' hang when launching an app in debug mode.

[Ansible] Using the -k, --ask-pass option with ansible-playbook command causes errors for servers that can SSH without password

Passing ansible-playbook -k, --ask-pass to a key-authenticated SSH host triggers an authentication error — dropping the flag fixes it.

[Apache] How to Fix SSL (HTTPS) Not Starting

On Apache 2.0.x, HTTPS stays down after apachectl restart unless you start with startssl or the -DSSL option.

[Apache] How to Fix 'Forbidden You don't have permission to access xxx on this server'

Fixing Apache's 403 Forbidden by checking directory permissions and the Order / Allow directives in httpd.conf.

[Apache][Error] httpd: apr_sockaddr_info_get() failed for

Fixing Apache's apr_sockaddr_info_get() failed error by aligning /etc/hosts, network config, and httpd.conf ServerName.

[Apache][Error] configure: error: no acceptable C compiler found in $PATH

Installing gcc and gcc-c++ via yum resolved the 'no acceptable C compiler' error when building Apache from source.

[Apache][PHP] libphp4.so: cannot open shared object file: No such file or directory

Fixing the libphp4.so missing error on Apache by correcting the LoadModule path in httpd.conf.

[Apache] Invalid command 'SSLCertificateFile', perhaps misspelled or defined by a module not included in the server configuration

Resolving the SSLCertificateFile error on Apache by adding the mod_ssl module.

[Apache][PHP4] Cannot load /etc/httpd/modules/libphp4.so into server: libpq.so.2.1: cannot open shared object file: No such file or directory

Fixing libpq.so.2.1 not found on Apache + PHP4 by symlinking the PostgreSQL library into /lib.

[Apache] [warn] _default_ VirtualHost overlap on port 443, the first has precedence

The Apache 'VirtualHost overlap on port 443' warning was caused by duplicate entries across ssl.conf and proxy.conf.

[Apache][Windows7] Solution for 'No listening sockets available' Error That Prevents Startup

Fixing Apache's port 80 conflict on Windows 7 by changing Skype's port settings.

ASAHI Net's fixed IP address becomes a dynamic global IP address

How I fixed ASAHI Net's fixed IP option that had started assigning a dynamic global IP address.

[Atom] How to fix getaddrinfo ENOTFOUND atom.io atom.io:443 error

Fixing `apm starred`'s `getaddrinfo ENOTFOUND atom.io` error by running `apm login`.

[Atom] How to fix 'The editor has crashed' error #AtomEditor

How I resolved Atom's 'The editor has crashed' error by uninstalling suspect packages one by one to find the culprit.

[Atom.io] 500 Error Page

A quick note about the time Atom.io's package search was down with a 500 error page.

[atom-ternjs] Solution for 'Failed to find plugin node-express'

Fixing atom-ternjs's 'Failed to find plugin node-express' error by installing the tern-node-express plugin.

[AWS] aws s3 sync ./upload_dir s3://xxx --region ap-northeast-1

Fixing the `aws s3 sync` PermanentRedirect error by passing --region for the bucket's region.

[AWS] How to Handle EC2 Instances Stuck in 'stopping' State

Force-stopping an AWS EC2 instance stuck in the 'stopping' state until it transitions to 'stopped'.

AWS ECS Task Error: 'Unexpected EC2 error while attempting to Create Network Interface in subnet 'subnet-xxx': InsufficientFreeAddressesInSubnet'

An ECS Task InsufficientFreeAddressesInSubnet error caused by leftover old tasks consuming subnet IPs.

When Basecamp Payment is Overdue, You Obviously Can't Use It at All...

If a Basecamp renewal payment fails, the account gets frozen and becomes completely unusable.

[Bash] Shell Script to List URLs That Return HTTP Status Code 200

A Bash snippet using curl and a for loop to list only URLs that return HTTP 200.

Initial setup for running Beego apps on Heroku

How to configure a beego app to bind Heroku's $PORT and avoid the R10 Boot timeout error.

[JavaScript] java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result

Fixing bigdecimal.js's repeating-decimal divide error by passing scale and RoundingMode.

[JavaScript][BigDecimal] java.lang.RuntimeException: Unknown call signature for obj = new java.math.BigDecimal: object

bigdecimal.js throws `Unknown call signature` when given a non-numeric value, so validate arguments first.

BigQuery Data Recovery Methods

Links to BigQuery's time travel docs and Google Cloud's backup / DR strategy for data recovery.

Solution for Google Apps Script 'Exception: 1 日にサービス premium gmail を実行した回数が多すぎます。' (Too many executions of premium gmail service per day)

Fixing the Google Apps Script premium gmail daily execution limit error by tuning run intervals.

Shopify POS Inventory Allocation When Adding Products to Cart: Verification Results

Verified Shopify POS inventory allocation when adding items to the cart, and the conditions under which over-ordering and negative inventory occur.

[Mac] How to Fix brew Command Not Working in Yosemite

How to fix the brew command on Mac OS X Yosemite when it fails with a bad interpreter error.

How to fix 'fatal: cannot create directory at '.github': Permission denied' error with brew update

How to fix brew update's Permission denied error by chown-ing /usr/local and resetting the Homebrew repo.

[Mac] Fixing 'Error: /usr/local must be writable!' with brew update

Notes on recovering from brew update's /usr/local must be writable! error via chown and brew prune.

Solution for Brother HL-L2375DW Stuck on 'Printing-Looking for printer' Issue on macOS

Notes on fixing a Brother HL-L2375DW stuck at 'Printing-Looking for printer' on macOS with a simple restart.

How to Fix 'An error occurred while installing mysql2 (0.5.3), and Bundler cannot continue.' in bundle install

How to fix mysql2 gem's native extension build error by pointing bundler to openssl's ldflags.

[RubyGems] Could not find xxx in any of the sources

Fixing Bundler's 'Could not find gem in sources' by matching the version available on RubyGems.

[Ruby on Rails] Solution for 'An error occurred while installing pg (1.4.5), and Bundler cannot continue.' [macOS Edition]

How to fix pg gem install errors on macOS by installing libpq with Homebrew and updating PATH.

[Ruby] cannot load such file -- ci/reporter/rake/rspec

Rescue ci_reporter's LoadError in Rakefile so Capistrano's assets:precompile survives in production.

[Ruby] Installing Nokogiri on CentOS 6.3

Fixing the 'libxml2 is missing' error when installing Nokogiri on CentOS 6.3.

How to Fix 'The error was: NoInstallationError("Could not find a usable 'nginx' binary. Ensure nginx exists, the binary is executable, and your PATH is set correctly.",)'

Fixing certbot renew --nginx NoInstallationError in crontab by adding /usr/sbin to PATH.

[Let's Encrypt] How to Fix certbot renew Error: Could not bind TCP port 443 because it is already in use by another process on this system

Fixing certbot renew's port 443 conflict by using the --nginx plugin option — no Nginx stop, no downtime.

How to Prevent Chrome Browser from Caching 301 Redirects

Avoiding Chrome's 301 redirect cache trap in short-URL services by using 302 or 307 instead.

How to Fix 'This site can't be reached DNS_PROBE_FINISHED_NXDOMAIN' in Chrome Browser

Four things I tried on macOS Chrome to clear the DNS_PROBE_FINISHED_NXDOMAIN error.

Solution for Google's 'Malicious apps may be installed on your device and used to access your account'

Recovering Chrome login after Google's 'malicious apps' warning by removing bad extensions and resetting browser settings.

[ClamAV] WARNING: Clamd was NOT notified: Can't connect to clamd through /var/run/clamav/clamd.sock

Silence freshclam's clamd.sock warning by commenting out NotifyClamd in freshclam.conf when clamd is not running.

Cloudflare Pages Error: Exit with error code: 126 When Specified Node.js Version Is Not Available

Fix Cloudflare Pages `Error: Exit with error code: 126` by pinning .tool-versions to a Node.js version the build image supports.

Solving ERR_TOO_MANY_REDIRECTS with Cloudflare + Nginx + WordPress by changing SSL/TLS to Full (strict)

Fixing Cloudflare + Nginx + WordPress `ERR_TOO_MANY_REDIRECTS` by switching SSL/TLS mode to Full (strict).

[iOS][CocoaPods] Psych::SyntaxError - ( .cocoapods/repos/master/CocoaPods-version.yml): mapping values are not allowed in this context at line 3 column 4

Fixing pod install's Psych::SyntaxError by upgrading CocoaPods and re-running pod setup on the master repo.

[CORESERVER] Database Backup Method

A quick memo on backing up a database from the CORESERVER management screen to the home directory.

[CORESERVER] Process Terminated with Killed

A note on working around CORESERVER's tar process being Killed by transferring files locally and compressing there.

Crash report service implementation proposal ~ Errbit, Sentry, Bugsnag, Airbrake

A proposal comparing Errbit, Sentry, Bugsnag, and Airbrake as crash report services by pricing and features.

[crontab] Solution for * is not found error

Troubleshooting notes on why cron scripts hit '* is not found' - the fix is setting PATH inside crontab.

Checking HTTP/1.1, HTTP/2 with curl --head --verbose Command

How to use curl --head --verbose to confirm whether a URL responds over HTTP/1.1 or HTTP/2, with sample output.

How to Save Cookies and Maintain Sessions with cURL

How to keep a login session alive with curl by saving cookies with -c and reusing them with -b.

[DataMapper] datamapper undefined method `include?' for nil:NilClass

Fixing `undefined method 'include?' for nil:NilClass` in Sinatra + DataMapper by calling DataMapper.finalize.

[DigitalOcean] Solution for 'You cannot create more than 10 droplets at a time' Error

Working around the 10-droplet batch limit when creating Droplets via the DigitalOcean API.

[Docker] How to resolve Error response from daemon: Container xxx is restarting, wait until the container is running

How I recovered from Docker's 'container is restarting' error using docker rm and docker-compose up -d.

java.io.IOException: Missing root object specification in trailer Error with easy-pdf-merge

Working around a PDFBox bug in the easy-pdf-merge npm package by using a maintained fork.

[Eclipse] No projects are found to import

Fixing Eclipse's "No projects are found to import" error by adding a .project file.

[Eclipse] Solution When PHP Syntax Errors Are Not Displayed

Fixing missing PHP syntax errors in Eclipse by running Add PHP Support on the project.

[Eclipse] svn: Working copy locked; try performing 'cleanup' - Cannot Perform Cleanup

How I fixed an Eclipse SVN working copy locked error by deleting the log and lock files when cleanup itself failed.

Solution for ECR Connection Error After Changing VPC Settings with S3 Endpoint on AWS

Notes on resolving ECR 403 Forbidden errors after VPC changes, focused on the S3 gateway endpoint that ECR relies on.

How to Investigate Amazon ECS Task Stop Reason 'Essential container in task exited'

How to investigate ECS tasks stopped with 'Essential container in task exited' via the Console and AWS CLI.

[Emacs] Solution When install-elisp.el is Installed but Cannot Be Used

The install-elisp.el setup for Emacs failed because I edited the wrong .emacs file — here is how I fixed it.

Real Engineer Horror Stories ~ HTTP Status Code 0 and curl: (35) SSL connect error

Two engineer horror stories: HTTP Status Code 0 and curl: (35) SSL connect error.

When Mining Ether on Ethereum Private Network, eth.blockNumber Stays at 0 Because DAG Generation Isn't Complete

eth.blockNumber stayed at 0 on an Ethereum private net because DAG generation wasn't done yet.

[Express.js] Solution for Error: Request Entity Too Large

Fixing Express.js `Request Entity Too Large` by raising the bodyParser limit, with three patterns.

[Facebook] Page Tab App (iframe) Redirect Problem and Solution

Why redirects from a Facebook Page Tab iframe blank the screen, and how `target="_top"` fixes it.

[JavaScript] fast-safe-stringify is Convenient for Preventing TypeError: Converting circular structure to JSON

Use fast-safe-stringify to serialize circular references as [Circular] and avoid JSON.stringify TypeErrors.

How to Fix Fastify 'Unsupported Media Type: application/x-www-form-urlencoded'

Fix Fastify's Unsupported Media Type: application/x-www-form-urlencoded by registering fastify-formbody.

When the Fire TV Remote Stops Responding — Why an Overnight Rest Fixes It, and the Right Power Reset

My Fire TV remote suddenly stopped responding. New batteries did not help, re-pairing did not help. I gave up, left it overnight, and the next morning it worked as if nothing had happened. As an engineer, a fix with no known cause is the most unsatisfying ending of all. Here I break down why an overnight rest works, through Bluetooth pairing state, residual charge, and the Fire TV OS input process, and I lay out the power reset that fixes it in minutes rather than a night.

How to Solve the Issue Where Firebase Hosting's Preview Channel Function Doesn't Work Due to Basic Authentication in Cloud Functions

How I fixed Firebase Hosting Preview channels serving stale content by dropping Basic auth from Cloud Functions.

[Firefox] POST Request Failing Due to Two Cookies with Same Key

Recovering from a Firefox issue where two cookies with the same key blocked POST requests, by deleting all cookies for the site.

How to Reset FLEXISPOT E7 When One Leg Tilts

How to reset the FLEXISPOT E7 electric standing desk from the controller when one leg tilts.

Forward Email emails not reaching Gmail properly due to Delivery Status Notification errors

Why Forward Email deliveries to Gmail started failing — the address landed on Forward Email's denylist via a spammed contact form.

Images Over 20 Megapixels Disappeared When Uploaded via Shopify GraphQL Admin API

Images over 20MP disappear via Shopify GraphQL Admin API — a note on the limits and validating uploads.

[Git] How to Fix error: cannot lock ref 'refs/remotes/origin/xxx': 'refs/remotes/origin/xxx/yyy' exists;

Resolving the git fetch cannot lock ref error by pruning stale remote refs with git remote prune origin.

[Git] Solution for "error: There was a problem with the editor 'vi'" Error

Fixing the git commit vi editor error by setting core.editor to your Vim path.

[Git] diff-highlight: command not found Error

Symlink Homebrew Git's contrib/diff-highlight into your PATH to fix the command not found error.

[Git] Solution for fatal: unable to access: SSL certificate problem: Invalid certificate chain

A quick workaround for the Invalid certificate chain error by toggling `http.sslVerify`.

[Github] Error creating pull request: Not Allowed (HTTP 405)

Fixing hub pull-request's HTTP 405 Not Allowed error by removing ~/.ssh/known_hosts.

[Gmail] Delivery Status Notification (Delay)

Gmail's Delivery Status Notification (Delay) turned out to be an over-quota storage issue on the forwarding destination.

[Gmail] Does GIF Image Files Have a Bug Where They Display Partially Cropped?

Some GIFs render partially cropped through Gmail's image proxy cache — swapping to PNG was the workaround.

go: modules disabled inside GOPATH/src by GO111MODULE=auto; see 'go help modules' solution

Fix go mod init failing inside GOPATH/src by exporting GO111MODULE=on before re-running the command.

[Google Analytics] How to resolve 'A security issue has occurred. Please reload the page. Unable to verify your account credentials. Please check your account information and log in again.'

Resolving the 'security issue' error in Google Analytics caused by the authuser URL parameter.

[Google Apps] Restoring deleted users/Restoring deleted users' documents

Restoring a Google Apps user and their Drive documents within the 5-day recovery window.

When Google Drive files are completely deleted, Google might be able to restore them?

Google support may restore completely deleted Drive files within a limited window if you ask soon.

[Google Apps] Google Drive sharing settings can take up to 24 hours to take effect

Google Drive sharing settings can take up to 24 hours to take effect, according to Google support.

How to Fix Google Fonts Not Loading or Not Applying Issues

How to fix Google Fonts not loading or font-weight not applying, with the two most common causes.

How to Fix 'googleads.g.doubleclick.net took too long to respond.'

Fixing 'googleads.g.doubleclick.net took too long to respond.' by restarting the Wi-Fi router.

Resolving 'Resolved xxx which is not part of the dependency lock state' Error in ./gradlew build with ./gradlew resolveAndLockAll --write-locks

Fixing the Gradle 'not part of the dependency lock state' error with ./gradlew resolveAndLockAll --write-locks.

[Haml] Solution for "syntax error, unexpected keyword_ensure, expecting keyword_end" Error

Fixing a Haml keyword_ensure syntax error caused by missing indentation inside an if branch.

Troubleshooting Hermes Agent When It Runs Out of Context — Discard the Half-Done Work and Restart Clean

You're having Hermes Agent create a PR and it stalls with 'Context length exceeded. Cannot compress further.', and /compress does nothing. As a Hermes Agent troubleshooting tip, this post shows how to discard the half-done changes and restart clean from your committed progress to finish the PR and close the issue.

Upgrading Heroku Command Version

Upgrading heroku-toolbelt to Heroku Toolbelt v4 with heroku update after stack:set was unavailable.

[Heroku] Error H99 (Platform error)

Heroku's Error H99 is a platform-side internal error; the only action is to check Heroku Status and wait.

[Heroku] "Heroku Git error, try again shortly."

Recovering from a Heroku Git error, try again shortly. failure by checking status and retrying the push.

[Heroku] Solution for rake assets:precompile Error in Rails 3.2 Apps

Fixing the rake assets:precompile error on Heroku by tweaking application.rb in a Rails 3.2 app.

[Heroku] Ruby on Rails 4 + Mongoid + MongoHQ '500 Internal Server Error'

Fixing the Mongoid ':consistency is an unknown option' 500 error on Heroku by trimming mongoid.yml.

PFU HHKB Professional HYBRID Type-S Cannot Be Charged via USB Type-C

The HHKB HYBRID Type-S can't be recharged over USB Type-C by design — swap the AA batteries.

[Homebrew] brew missing, imagemagick: xz

Resolving a brew doctor warning by installing the missing xz dependency required by ImageMagick.

[Homebrew] brew upgrade Warning: No developer tools installed. -> Run `xcode-select --install`

Resolving a 'No developer tools installed' warning from brew upgrade by running xcode-select --install.

How to Completely Erase macOS Disk

Standard macOS clean install plus a full-wipe path using diskutil secureErase from a bootable installer.

After upgrading to Mac OS X El Capitan, hub command stopped working, but 'brew upgrade hub' fixed it

The hub command broke with ArgumentError after upgrading to El Capitan, and 'brew upgrade hub' fixed it.

Use the -c option to exclude invalid characters that iconv cannot convert

Use iconv's -c option to skip invalid characters and finish a UTF-8 to Shift JIS conversion.

How to Fix Internet Explorer 11 (IE11) Showing Blank Pages on Amazon WorkSpaces

Fix blank pages in IE11 on Amazon WorkSpaces by turning off IE Enhanced Security Configuration.

[IE6] Solution for Issues with javascript:void(0); and onclick Not Working

In IE6, href="javascript:void(0);" with onclick works once you add return false; at the end.

Solution for large /tmp/magick-xxx files created by ImageMagick and policy.xml configuration changes

Cleaning up massive /tmp/magick-xxx files and tuning ImageMagick's policy.xml resource limits.

How to Write Incident Reports and Recurrence Prevention Plans

A personal memo on the minimum format for incident reports and recurrence prevention plans.

Internet Explorer has stopped working. A problem caused the program to stop working correctly. The program will be closed and Windows will notify you if a solution is available.

Fixing Internet Explorer crashes on a bank transfer system by clearing the browser cache.

Solution for No space left on device error ~ inode depletion edition

Tracking down a No space left on device error on Linux to inode depletion caused by wp-file-cache.

An App ID with Identifier com.example.xxx is not available. Please enter a different string.

What the `An App ID with Identifier ... is not available.` error means when registering an iOS App ID, and how to resolve it.

[iOS] Error "No application records were found."

Cause of Xcode's `No application records were found.` error when submitting an iOS app to the App Store.

[iOS] The binary you uploaded was invalid. The key CFBundleVersion in the Info.plist file must contain a higher version than that of the previously uploaded version.

A note on hitting the CFBundleVersion validation error while submitting an iPhone app update to the App Store.

[iOS] Code Sign error: No matching provisioning profile found: Your build settings specify a provisioning profile with the UUID

Fixing an iOS Code Sign error by removing the stale PROVISIONING_PROFILE line from project.pbxproj.

[iOS] How to Resolve EXC_BAD_ACCESS Errors

Reference links and real-world cases of EXC_BAD_ACCESS errors hit during iOS development.

[iOS] Facebook Error: The Facebook server could not fulfill this access request: The app must ask for a basic read permission at install time.

Fixing the Facebook iOS SDK basic read permission error by requesting read permissions before publish.

[iOS] Resolving Conflicts Between 'Facebook-iOS-SDK' Installed via CocoaPod and 'FacebookSDK.framework'

Fixing a clash between the CocoaPods Facebook-iOS-SDK and FacebookSDK.framework by dropping the Pods target.

[iOS] Use of undefined identifier FBAppCall

'Use of undefined identifier FBAppCall' was caused by an old FacebookSDK.framework missing FBAppCall.h.

[iOS] duplicate symbols: libGoogleAnalytics.a and libGoogleAnalytics_debug.a Cannot Coexist

Resolving duplicate symbols between libGoogleAnalytics.a and libGoogleAnalytics_debug.a by linking only one.

[iOS] Your Info.plist contains the UINewsstandIcon sub-property under CFBundleIcons, which is intended for use with Newstand feature. To include Newsstand features, the Info.plist must include the UINewstandApp=true Info.plist key.

How to resolve the UINewsstandIcon validation error when submitting an iPhone app via Xcode.

[iOS] How to Fix Build Error After Editing Localizable.strings: "validation failed: The data couldn't be read because it has been corrupted."

The build error after editing Localizable.strings was caused by missing semicolons at end of lines.

[iOS] How to fix images not displaying in Safari browser on iPhone and iPad

Images missing in iPhone/iPad Safari come from iOS resource limits based on device RAM.

[Objective-C][iOS] unable to dequeue a cell with identifier Cell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard

Notes on resolving the UITableView dequeueReusableCellWithIdentifier: assertion error.

[iOS][Xcode] Solution for Build Error 'While reading … pngcrush caught libpng error'

Fixing the pngcrush CopyPNGFile error by removing duplicated entries in Copy Bundle Resources.

Getting Currently Connected Network/Wi-Fi IP Address with ipconfig Command on Linux

Grab only the connected IP address on macOS with ipconfig getifaddr en0.

[iptables] Applying firewall rules: iptables-restore v1.4.7: no command specified Error occurred at line: 6

The `no command specified` error on iptables restart was caused by whitespace on a blank line.

[JavaScript] How to Fix the Problem Where removeEventListener Cannot Remove Events

Why removeEventListener silently fails when the listener is redefined, and how to fix it by lifting the listener out.

[JavaScript] Quick solution for URI malformed / malformed URI sequence errors

A quick try...catch workaround for the URIError raised by decodeURIComponent on invalid input.

[JavaScript] js2coffee Converts arguments to arguments_

Js2coffee silently renamed arguments to arguments_ and caused a runtime error.

[JavaScript] jsdom memory leak

Fixed an out of memory error in a jsdom scraper by calling window.close().

KeystoneJS Configuration Error: Please provide a `cookie secret` value for session encryption.

Fix the KeystoneJS cookie secret error on Heroku deploy by setting the COOKIE_SECRET env var.

[Android] How to fix garbled characters in keytool command

Fix garbled keytool output on Mac by setting `_JAVA_OPTIONS` to UTF-8 file encoding.

[Let's Encrypt] How to resolve 'Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA.' error

Fixing certbot's authenticator-challenges error by upgrading certbot and re-running renew.

[Let's Encrypt] How to resolve 'The requested nginx plugin does not appear to be installed'

Fixing certbot's missing Nginx plugin error by installing python-certbot-nginx.

error while loading shared libraries: /lib/libc.so.6: file too short Kernel panic: Attempted to kill init!

A CentOS-on-VMware kernel panic caused by libc.so.6 that I recovered from via backup.

[Linux] Commands to check CPU core count

How to check CPU core count and processor details on Linux with nproc, getconf, and /proc/cpuinfo.

[Linux] Command to Check Directories with High Disk Usage

Combine du and sort to find the top directories eating disk space on Linux when hit with a disk full warning.

[Linux] Command to Delete Old Files by Specifying Date and Time

Use find with -mtime / -atime and xargs rm to bulk delete old files on Linux when freeing up disk space.

[Linux/macOS] Batch Compress Files to .gz with gzip Command

Use gzip * to batch compress log files and free up disk space when hit with a sudden disk full incident.

[Linux] About Memory Management

A quick reference note on Linux memory management and memory leak detection.

[Linux] Check Domain TXT Records with nslookup -q=txt Command

Use nslookup -q=txt to look up a domain's TXT records, including SPF.

[Mac] How to Configure Not to Create .DS_Store Files

How to stop Mac from creating `.DS_Store` files on Windows network shares.

[Mac] How to fix slow Excel performance

Fixing slow Excel for Mac by cleaning up font duplicates, preference plists, and Microsoft caches.

[Mac] Completely Uninstall Elasticsearch Installed with Homebrew

Fully uninstalling a Homebrew-installed Elasticsearch, including its data and log directories.

[Mac] After Installing Homebrew, Got Error "Warning: Now install Xcode: http://developer.apple.com/technologies/xcode.html"

The 'Warning: Now install Xcode' Homebrew message was fixed by installing Xcode from the App Store.

[Mac] How to Fix When Hoster Won't Launch

Fixing Hoster launch issues by restoring the group and permissions on /etc/hosts.

[Mac] Command to check processes using a specific port: lsof -i

Using lsof -i on macOS to find the process listening on a specific port.

[Mac] Error During Node.js Installation: Build failed: -> task failed (err #2): {task: uv uv.h -> uv.a}

Fixing a Node.js build failure around uv on macOS by removing osx-gcc-installer and keeping Xcode Command Line Tools.

[Mac] Solution for 'You do not have permission to open document xxx'

Fixing the 'You do not have permission to open document' error on Mac by batch-updating permissions with `chmod -R`.

[Mac] Infected with virus and search-quick.com gets set as the default page

Cleaning a search-quick.com adware infection on a Mac using Safari extension cleanup and AdwareMedic.

[Mac] -bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory

Turn off Terminal's 'Set locale environment variables on startup' to silence the LC_CTYPE warning over ssh.

[Mac] How to fix Wi-Fi (wireless LAN) connection issues

A reference-link memo for a Mac Wi-Fi troubleshooting guide that resolved my connection issue.

[Mac] Window Displaying Off-Screen Issue and Solution

Bringing a Mac window back from off-screen by deleting the app's plist under Preferences.

[MacOS] How to Uninstall All Versions of PostgreSQL ~ Homebrew Edition

Using brew uninstall --force to remove every Homebrew-installed PostgreSQL version on macOS, plus cleaning up the data directory.

macOS Keychain Error -25294 (errSecNoSuchKeychain) — Fixed by Importing the Certificate into login

You try to import a certificate into your keychain and get error -25294, which blocks the import. errSecNoSuchKeychain, meaning 'the specified keychain could not be found,' almost always points not at the certificate itself but at the destination keychain. Based on a case where switching the import target from Local Items to login fixed it, here is the cause and the shortest path to a fix.

[Mac] Memory cleaning apps are deprecated since OS X 10.9.x Mavericks

Why memory-cleaner apps are no longer recommended since OS X Mavericks, and how to check memory usage with Activity Monitor.

Microsoft Outlook URL Character Limit: 1024 Characters

Outlook cuts URLs at 1024 characters — here's the limit and how URL shorteners work around it.

Reusing variables between different versions of Moment.js and Moment Timezone resulted in spectacular bugs

Mixing Moment.js and Moment Timezone versions broke date handling due to how the _d property is treated.

moment-timezone old version caused date processing bugs during daylight saving time switch

An old moment-timezone bugged out at the DST switch — upgrading fixed it, and here's why tz updates matter.

[MongoDB] Failed global initialization: BadValue Invalid or no user locale set. Please ensure LANG and/or LC_* environment variables are set correctly.

Work around the mongo shell BadValue locale error by running `export LC_ALL=C`.

[MongoDB] Solution for exception: can't convert from BSON type EOO to Date

Guard $year/$month with $match and `$type: 9` to avoid the aggregate EOO to Date error.

[MongoDB] How to Fix "$err" : "Can't canonicalize query: BadValue cannot compare to undefined", "code" : 17287

Reproducing and guarding against the MongoDB code 17287 undefined-comparison error.

[MongoDB] Difference Between Code 11000 and 11001 in E11000 duplicate key error index

Reproducing why MongoDB 2.4.5 returned both 11000 and 11001 for duplicate key error index, and confirming 3.0.2 unified them to 11000.

[MongoDB] Error: failed to connect to [localhost:27017]

How a missing localhost entry in /etc/hosts broke a Node.js MongoDB connection on 27017.

[MongoDB] How to Resolve Error: getMore: cursor didn't exist on server, possible restart or timeout?

Tuning indexes first, then falling back to the noTimeout cursor option to fix MongoDB's getMore cursor error.

[MongoDB] Index names can only be set up to a maximum of 127 bytes

Reproducing MongoDB's 127-byte index name limit with successful and failing createIndex calls.

[MongoDB] How to Change LogLevel (Log Level) Settings

How to switch MongoDB logLevel between 0, 1, and 5 with setParameter.

[MongoDB] MongoError: Runner error: Overflow sort stage buffered data usage of x bytes exceeds internal limit of 33554432 bytes

Adding an index on the sort field resolved the Overflow sort stage error in Express + Mongoose.

[MongoDB] How to resolve SyntaxError: Unexpected end of input, Unexpected token }

When a regex literal breaks the MongoDB shell with SyntaxError, use the RegExp constructor instead.

[MongoDB] How to Fix "sort stage buffered data usage of x bytes exceeds internal limit of 33554432 bytes" Error

Adding a Mongoose schema index on the sort field cleared the sort stage buffered data limit error.

[MySQL] Startup Fails with default-character-set

Fixing a MySQL 5.5 startup failure by switching my.cnf to character-set-server=utf8.

[MySQL] File './mysql-bin.index' not found (Errcode: 13)

Fixing the MySQL Errcode: 13 error on mysql-bin.index by giving the mysql user ownership via chown.

[MySQL] CMake Error: Internal CMake error, TryCompile configure of cmake failed

Fixing MySQL source build errors on CentOS 6.3 by installing gcc-c++ and bison.

[MySQL] SQLSTATE[HY000]: General error: 1030 Got error 28 from storage engine

The MySQL 'Got error 28 from storage engine' error is caused by a full disk.

[MySQL] How to Solve ERROR 1045 (28000): Access denied for user

Granting the FILE privilege to fix MySQL's Access denied error on SELECT INTO OUTFILE.

[MySQL] Query Log File Cannot Be Specified Error / [ERROR] Could not use /var/log/myquery.log for logging (error 13)

Resolving MySQL's 'Could not use ... for logging (error 13)' startup failure via my.cnf.

[MySQL] Getting stuck with reserved words - ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'xxx' at line 1

MySQL threw ERROR 1064 on a query because the column name primary is a reserved word.

[Nagios] Return code of 255 is out of bounds error occurs when NRPE is not running

Return code of 255 usually means NRPE isn't running on the monitored host — start it and enable auto-start.

Investigating Netlify Server Location and Region

Using nslookup, traceroute, and ip2location to identify a Netlify site's server location as Singapore.

[Newgistics] Time Zone is America/Denver - MT(MST/MDT)

How I identified the Newgistics API timezone as America/Denver (MT) from the newgistics-ruby client.

[Android] How to Fix Nexus7 When It Won't Start

Bringing a fully discharged Nexus 7 back to life with a long power-button press or the power + volume-key combo.

[Nginx] add_header Not Reflected Due to Overwrite Issue and Solution

Why Nginx add_header at the server level disappears when a location block adds one, and how to work around it.

[Nginx] upstream timed out (110: Connection timed out) while reading response header from upstream

How I resolved Nginx 504 Gateway Time-out errors by switching PHP-FPM's pm to static and retuning it.

How to Remove WordPress Cache Plugin WP File Cache

How I deactivated and completely removed the WP File Cache plugin after it exhausted the server's inodes.

[Node.js] RangeError: Maximum call stack size exceeded

Fixing Maximum call stack size exceeded in async.eachSeries by wrapping with process.nextTick.

[Node.js] Error: bind EADDRINUSE

Recovering from Node.js bind EADDRINUSE by finding the port-hogging process with netstat and killing it.

[Node.js] How to resolve Error: Cannot find module 'express'

Fixing Node.js Cannot find module 'express' by reinstalling dependencies with npm install -d.

[Node.js] How to Fix Error: spawn ENOENT

child_process.spawn's Error: spawn ENOENT was caused by a missing ImageMagick binary.

[Node.js] How to Resolve Error: ENFILE: file table overflow, open xxx

Fixing Node.js's ENFILE: file table overflow on macOS by raising the file descriptor limit with launchctl plist files.

[Node.js] RangeError: Maximum call stack size exceeded

Notes on working around Node.js's RangeError: Maximum call stack size exceeded using the --stack-size option.

[Node.js] http.request with [Error: socket hang up] code: 'ECONNRESET'

Fixing Node.js's ECONNRESET socket hang up by switching from the http module to the https module for HTTPS requests.

[Node.js] JavaScript heap out of memory can be resolved with --max-old-space-size

Working around a Node.js JavaScript heap out of memory in CI by raising --max-old-space-size to 2048 MB.

[Node.js][node-csv] Error: Invalid closing quote at line 1; found " " instead of delimiter "\ "

Working around a node-csv Invalid closing quote error caused by stray double quotes in tab-separated input.

[Node.js] gyp ERR! configure error Error: EACCES, mkdir '/Users/name/.node-gyp'

Working around node-gyp's EACCES mkdir '/Users/name/.node-gyp' error with mkdir and chmod.

[Node.js] Installed socketio instead of socket.io and got 'Cannot find module 'socket.io'' error

Mixing up the socketio and socket.io npm packages led to a Cannot find module error — here's the fix.

Error: Cannot find module '../build/Release/sodium' solution [macOS Edition]

Fixing the Node.js 'Cannot find module sodium' error on macOS with Homebrew's libsodium and a fresh npm install.

Resolving Node.js Timezone Issues with Environment Variable TZ=utc ~ production: UTC vs development: JST

Aligning production UTC and development JST in Node.js by setting the TZ=utc environment variable.

[Ruby] "libiconv is missing" Error During nokogiri Installation with bundle install

Fixing the 'libiconv is missing' error during bundle install of nokogiri with bundle config build.nokogiri.

[Ruby] WARNING: Nokogiri was built against LibXML version 2.7.3, but has dynamically loaded 2.7.8

Fixing the Nokogiri vs LibXML version mismatch warning by reinstalling libxml2 libraries via Homebrew.

How to resolve node-gyp errors during npm install

Four ways I've fixed recurring node-gyp rebuild errors during npm install.

Using @nuxtjs/auth-next Instead of @nuxtjs/auth Due to 'export 'default' (imported as 'nanoid') was not found in 'nanoid'' Error

Resolving the @nuxtjs/auth nanoid error in Nuxt.js by switching to @nuxtjs/auth-next.

How to Solve CORS Errors with Nuxt.js + axios

Fixing a Nuxt.js + axios CORS error by enabling axios proxy: true in nuxt.config.js.

[Nuxt.js] How to Fix ESLint and Prettier Errors After npx create-nuxt-app

Fixing ESLint / Prettier conflicts right after npx create-nuxt-app by tweaking vue/html-self-closing.

[Nuxt.js] How to fix the bug where npm run dev doesn't start after npx create-nuxt-app

Fixing a fresh Nuxt.js project that won't run npm run dev by swapping ctx.isClient for process.client.

How to Fix Nuxt.js 'Enable vuex store by creating store/index.js.' Error

Fixing the Nuxt.js "Enable vuex store by creating store/index.js." error by creating that file.

CORS Error Countermeasures in Nuxt.js SPA Mode

Fixing CORS in Nuxt.js SPA mode by using axios baseURL and handling CORS on the API server.

How to Fix "You have $NVM_DIR set to "/Users/yourname/.nvm", but that directory does not exist."

Clearing the NVM_DIR environment variable to get past a failing nvm install script.

[Objective-C] Instance method -initWithfloat not found return type defaults to id

Hours lost to an Objective-C typo — `initWithfloat` instead of `initWithFloat`.

[Objective-C] Expected expression Error in switch Statement

Fixing an Expected expression error caused by declaring a variable inside an Objective-C case block.

[Objective-C] unrecognized selector sent to instance

Tracking down an `unrecognized selector sent to instance` error in Objective-C.

How to Fix OBS Studio 'Failed to Connect to Server' Error

Fixing OBS Studio's "Failed to connect to server" error via update and Bind to IP change.

[oh-my-zsh] How to Fix 'Insecure completion-dependent directories detected'

Resolving oh-my-zsh's Insecure completion-dependent directories warning with chmod 755.

Switching Onamae.com Name Servers from dns01.gmoserver.jp to 01.dnsv.jp Broke POP/SMTP Server Connection

Onamae.com nameserver switch broke POP/SMTP access to Onamae Mail — updating stale credentials fixed it.

[Oracle] How to Resolve ORA-12505, TNS:listener does not currently know of SID given in connect descriptor Error

Fixing the ORA-12505 TNS listener error by restarting the listener and Oracle instance.

[PayPal] Transaction cannot complete. error cause is unknown even to PayPal employees, so you have to contact credit card companies or banks

PayPal API Error 10417 Transaction cannot complete. — even PayPal cannot pinpoint the cause, so customers must contact their card issuer or bank.

[Node.js] phantom Module's addCookie Method Arguments Changed

phantom 0.7.2 changed addCookie to take a single cookie object, so callers need to be updated.

[PHP][APC] Warning: require_once(): Unable to allocate memory for pool.

Silencing the APC Unable to allocate memory for pool warning by setting apc.mmap_file_mask=/dev/zero.

[PHP] How to Check Options Specified for ./configure

A short note on checking PHP's ./configure options via config.nice and php -i.

[PHP] How to Check the Output Directory of error_log

Use php -i and grep to find where PHP writes its error_log.

[PHP] Character Code Conversion for Platform-Dependent Characters (EUC-JP→UTF-8)

Chain mb_convert_encoding via sjis-win to convert EUC-JP to UTF-8 including platform-dependent characters.

[PHP-FPM] WARNING: [pool www] server reached pm.max_children setting (30), consider raising it

Fixing PHP-FPM's pm.max_children WARNING and Bad Gateway by raising the setting in www.conf.

[PHP-FPM] recv() failed (104: Connection reset by peer)

Raising PHP-FPM's request_terminate_timeout to 120s to stop frequent 502 Bad Gateway errors.

[PHP][JavaScript] Encoding and Character Garbling Issues with urlencode and encodeURI

Skip PHP-side urlencode and rely on JavaScript's encodeURI to avoid IE mojibake.

[PHP][PEAR] Solution for 'Column count of mysql.proc is wrong.' Error

Digging up the real cause behind a PEAR::DB "unknown error" via getDebugInfo().

[PHP4] make[1]: *** [libphp4.la] Error 1

A make clean fix for the libphp4.la error when rebuilding PHP4 from source.

[PostgreSQL][8.0.4] Sequence Function Arguments are text Type, not regclass Type (ERROR: cannot cast type text to regclass)

Fixing the PostgreSQL 8.0.4 'cannot cast type text to regclass' error in nextval.

[PostgreSQL] ERROR: Cannot insert a duplicate key into unique index

Quick note on PostgreSQL's duplicate-key error when INSERT hits a UNIQUE constraint.

[PostgreSQL] ERROR: missing FROM-clause entry for table

Handling the missing FROM-clause error in PostgreSQL, and what changed with add_missing_from in 9.0.

[PostgreSQL] ERROR: must be owner of extension plpgsql

Resolving `must be owner of extension plpgsql` on pg_dump import by granting the role superuser privileges.

[PostgreSQL] Check table permissions when ERROR: permission denied for ~ error occurs

Fixing PostgreSQL's permission denied error by checking table privileges with `\z` and running GRANT.

[PostgreSQL] ERROR: language "plpgsql" does not exist

Fixing PostgreSQL's missing plpgsql language by loading it with the `createlang` command.

[PostgreSQL] postmaster.opts is Auto-generated, So Editing It is Pointless

Notes on why editing postmaster.opts is pointless — it's regenerated on restart, so the startup script needs to change.

Got Library not loaded: libreadline error when running psql, so I ran brew upgrade postgresql

How I fixed a psql libreadline error with brew upgrade postgresql and pg_upgrade.

[SSH][Putty] Permission denied (publickey,gssapi-with-mic). When Trying SSH Public Key Authentication Login

Fixing multi-hop SSH Permission denied errors in PuTTY by enabling Pageant agent forwarding.

[Character Encoding] UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 [Python]

Resolving a UnicodeDecodeError from the Amazon API call by switching the keyword argument to a Unicode string.

[Python] UnicodeDecodeError: 'ascii' codec can't decode byte 0xe3

Resolving a UnicodeDecodeError in a GAE Python handler by encoding the POSTed value to UTF-8.

How to Fix ERROR: Could not find a version that satisfies the requirement torch (from versions: none)

Getting PyTorch to install by downgrading Python from 3.12 to 3.10.13 via asdf.

[Rackspace cloud] SSL URLs for Cloud Files

A quick memo on deriving the HTTPS (SSL) URL for Rackspace Cloud Files by swapping r01 with ssl.

[Rails3.0] When Scaffold-Generated Delete (Destroy) Links Don't Work, Check if jquery_ujs.js or rails.js is Loaded

Rails 3.0 Destroy links not firing? Check that jquery_ujs.js is loaded via the jquery-rails gem.

[Rails 3.1.0] ActionView::Template::Errror (application.css isn't precompiled)

Fixing the Rails 3.1 application.css isn't precompiled error on Heroku by setting config.assets.compile = true.

[Rails] AbstractController::DoubleRenderError

Fixing Rails 3.1's AbstractController::DoubleRenderError by adding `and return` after the first render.

[Ruby on Rails] ActionDispatch::Cookies::CookieOverflow error

Fixing Rails' CookieOverflow error by moving the session store off cookies onto ActiveRecord or Redis.

[Ruby on Rails] ArgumentError (invalid byte sequence in US-ASCII)

Fixing `ArgumentError (invalid byte sequence in US-ASCII)` in Rails by adding `# encoding: utf-8` to the file header.

[Ruby on Rails] PDFKit doesn't work with NoMethodError (undefined method `chomp' for nil:NilClass): error

Fixing PDFKit's `chomp` nil error on CentOS + Passenger by exporting PATH via a ruby_wrapper script.

[Rails] Solving the 'rake aborted! no such file to load -- pg' Error with rake db:migrate Command

Fix `rake db:migrate` failing with `no such file to load -- pg` by swapping sqlite3 for pg in your Gemfile.

[Rails] The Cause of redirect_to Not Working Was a Half-Width Space in the URL

`redirect_to` failed silently in Rails because a Facebook OAuth scope URL contained a stray half-width space.

Solution for rbenv/x.x.x/libexec/rbenv: No such file or directory

Fixing the rbenv/x.x.x/libexec/rbenv: No such file or directory error by running rbenv rehash.

[Redmine] Encoding::CompatibilityError (incompatible character encodings: UTF-8 and ASCII-8BIT):

Fixed Redmine 1.2.3's Encoding::CompatibilityError by switching Ruby from 1.9.2 to the required 1.8.7.

Solution for bundle/gem install rmagick error: Can't find MagickWand.h

Fixed the rmagick MagickWand.h build error by switching to Homebrew's imagemagick@6.

Lesson learned: Check router's DHCP allocation limit when you get 'Cannot connect to internet due to self-assigned IP address' error

The lesson: when Wi-Fi hits a self-assigned IP error, check the router's DHCP allocation limit — mine was capped at 32.

[Ruby] God : The server is not available (or you do not have permissions to access it)

How I resolved god's 'The server is not available' error by loading the config file with an explicit path instead of a glob.

[Ruby] Solution for ERROR: cannot discover where libxml2 is located on your system. please make sure `pkg-config` is installed.

Fixing nokogiri's libxml2/pkg-config install error on macOS by installing the libraries with Homebrew and using system-libraries.

[RVM] Empty path passed to certificates update, functions stack: requirements_osx_update_openssl_cert_run …

Fixing an RVM Ruby 2.1.3 install error by reinstalling with the --disable-binary flag.

[Ruby][RVM] mysql2.bundle: [BUG] Segmentation fault

Fixing a mysql2.bundle segmentation fault after recreating an RVM gemset by updating RVM to head.

[Ruby] rvm pkg install zlib → [ERROR] There is no checksum for xxx

Working around the no checksum error from rvm pkg install zlib with --verify-downloads 1.

[RVM][Mac] Error running 'make ', please read ruby-1.9.2-p290/make.log

Working around a Ruby 1.9.2 make error on Mac OS X Lion by installing apple-gcc42 and using CC=gcc-4.2.

[RVM][Ruby] ERROR: Loading command: install (LoadError) cannot load such file -- zlib, ERROR: While executing gem ... (NameError) uninitialized constant Gem::Commands::InstallCommand

Fixing a zlib LoadError from gem install by reinstalling Ruby 1.9.3 with RVM without the -C path options.

[RVM] How to resolve Could not load OpenSSL error

Fixing a Could not load OpenSSL error in RVM-managed Ruby by installing OpenSSL via rvm pkg.

When 'Updating RPMS on system' appears on console during Sakura VPS first boot, wait patiently

If Sakura VPS first boot is stuck on `Updating RPMS on system`, wait about 20 minutes.

I Was Thinking 'There's an UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY Error!' When I Received an Email Titled '[Sakura VPS] Report on Failure'

A Sakura VPS host hardware failure caused fsck errors — I opted to restore from their backup.

[Sass] Solution for Error: File to import not found or unreadable

Two ways to resolve the 'File to import not found or unreadable' error thrown by Sass (Scss) at @import time.

Seashore Stopped Launching on macOS Sierra

A memo on Seashore no longer launching on macOS Sierra, and switching over to Pixelmator instead.

Points to check when configuration file specified in Serposcope's Dserposcope.conf is not loaded

Serposcope ignored `-Dserposcope.conf` because I had the `java` command options in the wrong order.

I Tried Using Free Proxies with Search Ranking Checker Tool Serposcope but It Didn't Work

I hooked Serposcope up to free proxies, but CAPTCHAs made it completely unusable.

How to fix Task timed out after 6.00 seconds error [Serverless Framework][AWS Lambda]

My Lambda function hit the default 6 s timeout, so I bumped the `timeout` value in `serverless.yml`.

[Shell Script] /bin/bash^M: bad interpreter: No such file or directory

`/bin/bash^M: bad interpreter` comes from CR/LF line endings — convert the script to LF to fix it.

Solution for Shopify "Google requires you to add refund policy and terms of service to the footer of your store."

Resolving Shopify's Google sales channel warning by adding store policies and updating footer links.

Shopify URL Parameter Reserved Words and Namespace Usage

Shopify's reserved URL parameters and a namespace pattern for custom parameters to avoid conflicts.

[Solr] JapanesePartOfSpeechStopFilterFactory : java.lang.ClassCastException: java.lang.String cannot be cast to [C

Notes on the java.lang.ClassCastException from Solr's JapanesePartOfSpeechStopFilterFactory.

[Android] SP mode mail's received/sent email font size is too large or too small

Fixing mismatched SP mode mail font sizes on Android by updating to the Docomo mail app.

When Duplicate Records Appear in Results, Suspect LEFT JOIN / INNER JOIN

When SQL results include duplicate records, suspect the LEFT JOIN / INNER JOIN keys first.

[SSH] Things to Be Careful About When Setting Up Public Keys and How to Handle 'Permission denied (publickey,gssapi-with-mic).'

Fixing 'Permission denied' during SSH public key auth by adjusting .ssh and authorized_keys permissions.

[SSH] SSH connection with users who don't have password set fails even with public key authentication only

Why SSH public key auth fails for users without a password, and how to fix it.

[ssh] How to fix 'Warning: the RSA host key for 'server_name' differs from the key for the IP address 'xxx'

How I cleared the ssh RSA host key mismatch warning by deleting the offending line from known_hosts.

[SSH] Received disconnect from xxx : 2: Too many authentication failures for username

How I cleared ssh's `Too many authentication failures` error by dropping all keys from the agent with `ssh-add -D`.

WARNING: UNPROTECTED PRIVATE KEY FILE When Copying SSH Public/Private Key Files

How I cleared the `WARNING: UNPROTECTED PRIVATE KEY FILE` error by tightening private key permissions with `chmod 600`.

[Sublime Text 2] Solution for Package Control: Install Packages Not Working

Fixing a broken Package Control: Install Packages in Sublime Text 2 by removing the whole config directory.

Support Details is extremely useful for handling bug reports from customer support

Support Details (supportdetails.com) is handy for collecting a user's OS, browser, and environment info during bug triage.

[Symfony1.4] csrf token: Required.

How I fixed the `csrf token: Required.` error in Symfony 1.4 by rendering the form's hidden fields.

[Symfony1.4] How to Configure Settings to Hide Strict, Deprecated Errors and Warnings

Silencing Symfony 1.4 Strict / Deprecated errors by editing error_reporting in settings.yml.

[Error] Unable to parse string: Unable to parse line ~. [Symfony1.4]

Fixing Symfony 1.4 fixture YAML parse errors from a missing colon and tab indentation.

[Error] Invalid row key specified: ~ , referred to in ~

Fixing Symfony 1.4 `Invalid row key specified` fixture errors tied to foreign key relations.

[Symfony] Enabling mod_rewrite to Fix Apache Standard 404 Not Found Display

Fixing Symfony 1.4 prod 404s by enabling Apache's mod_rewrite.

Resolved tfenv install Error with brew install grep

Fixing a `tfenv install` error caused by missing GNU Grep with `brew install grep` on macOS.

[Titanium Mobile] invalid method (createCoverFlowView) passed to UIModule

Fixing Titanium Mobile's `invalid method passed to UIModule` error by forcing a full rebuild via `rm -rf build/iphone`.

[Titanium Mobile][ERROR] Script Error = Parse error (unknown file)

Titanium Mobile's `Script Error = Parse error (unknown file)` almost always points to a JavaScript syntax bug.

Twitter Bootstrap 2.x modal behavior is strange in IE11

Upgrading Twitter Bootstrap from 2.0.4 to 2.3.2 fixed a modal bug that only reproduced in IE11.

[Ubuntu] Solution for 'sudo: add-apt-repository: command not found' Error

Fixing 'add-apt-repository: command not found' on Ubuntu by installing software-properties-common.

VALUE-DOMAIN DNS Settings Not Reflecting Due to Unconfigured Name Servers

How to fix VALUE-DOMAIN DNS not reflecting by configuring the name servers to ns*.value-domain.com.

[Virtual OS] VirtualBox NAT + Host-Only Adapter Network Configuration / Solution When SSH from Host OS Fails

Fixing SSH from host OS to a VirtualBox CentOS guest with NAT + host-only adapter and pinned eth1.

Installed VLC Due to QuickTime Freezing Bug on macOS 14 Sonoma

Working around QuickTime freezes on macOS 14 Sonoma by installing VLC via Homebrew Cask.

[VMware] Solution for Device eth0 does not seem to be present, delaying initialization Error

Fixing the eth0 does not seem to be present error on a cloned VMware VM.

How to Fix VSCode markdown-pdf: Export Error

Fixing the VSCode Markdown PDF export error by pointing Markdown-pdf: Executable Path to Google Chrome.

wget no-check-certificate Option for SSL, https Connection

Bypass wget's SSL certificate verification error with the `--no-check-certificate` option.

Fixing whois Command Character Corruption with nkf [macOS]

Pipe whois through nkf to fix garbled Japanese output on macOS.

[WiMax] How to Fix Connection Issues with Aterm WM3600R

Reference notes for fixing frequent Wi-Fi disconnects on Aterm WM3600R.

[Windows] Fake Java Update Sites and Solutions

How I cleaned up a Windows machine hit by fake Java update sites, using browser cache clearing and IObit Uninstaller.

Can't Sign In to a Local Account on an Entra ID-Joined PC — Fix It by Prefixing the Username with ".\"

I set up a loaner Windows 11 PC with Entra ID Join and created a local account, user01, for the trainee. When I tried to sign in as user01, the password was correct but it would not log in. Here is the cause, and why prefixing the username with '.\' fixes it in one step.

[Windows] When You Accidentally Delete Programs, Use 'System Restore' to Revert

How I recovered a Windows machine with System Restore after uninstalling too many programs.

[Windows7] Solution for 'The User Profile Service service failed the logon' Error

Recovering Windows 7 from the User Profile Service logon failure using Microsoft's official steps in Safe Mode.

[macOS] dyld: Library not loaded: /usr/local/lib/QtWebKit.framework/Versions/4/QtWebKit

Fixing the wkhtmltopdf QtWebKit dyld error on macOS High Sierra with a Homebrew Cask reinstall.

How to Fix Japanese and Chinese Character Display Issues in wkhtmltopdf

Getting Japanese and Chinese to render in wkhtmltopdf via IPAex Font and Noto Sans CJK.

[WordPress] Google AdSense Ads Not Displaying → Cause Was Fast Velocity Minify Plugin

Tracking down blank WordPress AdSense ads to the Fast Velocity Minify plugin, one cache plugin at a time.

[WordPress] Couldn't Edit Category from Admin Panel, So Resolved by Updating Database

Working around a WordPress category permission error by updating wp_terms directly in MySQL.

[WordPress] Solution for 'Could not remove old plugin'

Resolving WordPress 'Could not remove old plugin' with a chown to nginx.

[WordPress] How to resolve Facebook Sharing Debugger 'The following properties are required: fb:app_id' error

Fixing Facebook Sharing Debugger's fb:app_id error with Yoast SEO.

[Ionic] How to Clear Cache When Building for Android/iOS

How I recovered from Ionic + Cordova build failures by clearing the cache via platform remove / add.

WordPress 'Currently under maintenance, temporarily unavailable.' - How to fix

Recovering a WordPress site stuck on the maintenance message by deleting the .maintenance file.

[WordPress] Fixed Email Sending Issue with WP Mail SMTP Version 1.7.0

How I fixed WP Mail SMTP 1.7.0 by swapping the From Email and From Name fields back to their correct values.

[Xcode 10] How to solve Multiple commands produce error

Resolving the Xcode 10 Multiple commands produce error by switching to the Legacy Build System.

[Xcode] How to Fix Archive Not Selectable Issue

Fixing a greyed-out Archive menu in Xcode 4 by switching the Scheme to iOS Device.

[Xcode] iOS Simulator could not find the SDK.

The 'iOS Simulator could not find the SDK' error came from picking an outdated Simulator version in build settings.

[iOS] xcode cannot run using the selected device - No provisioned iOS devices are available with a compatible iOS version. Connect an iOS device with a recent enough version of iOS to run your application or choose an iOS simulator as the destination.

Clearing the 'No provisioned iOS devices' error via Organizer's 'Use for Development' button in Xcode.

[Xcode][iOS] error: PCH file built from a different branch ((clang-425.0.27)) than the compiler ((clang-425.0.28))

Clearing the 'PCH file built from a different branch' Xcode error with a Clean and rebuild.

[Xcode] fatal error: file 'xxx' has been modified since the precompiled header was built 1 error generated.

Clearing the Xcode precompiled header error after replacing opencv2.framework with a Clean and rebuild.

[Xcode5][CocoaPods] Apple Match-O Linker Error: ld: library not found for -lPods

Fixing the Xcode 5 '-lPods' linker error by updating CocoaPods and re-running pod install.

xk6-cognito verification -> Got errors and it didn't work

Trying the xk6-cognito k6 module ended in a context.Context conversion error — here's the reproduction and known issue.

[Android] Xperia SO-01E powers off forcibly when launching Google Maps

A note that the Xperia SO-01E's forced shutdown on launching Google Maps was fixed by a software update.

[Android] Xperia SO-01E was extremely slow, so I deleted/disabled unnecessary apps

A list of the Docomo and Sony preinstalled apps I deleted and disabled to make a slow Xperia SO-01E usable again.

[Yeoman] You don't seem to have a generator with the name chrome-extension installed.

Fixing Yeoman's missing-generator error on nvm by switching NODE_PATH together with `nvm use` from a .zshrc helper.

How to fix the problem of double-displayed titles in Yoast SEO

Fixing doubled titles after installing Yoast SEO by enabling Force rewrite titles on the Search Appearance page.

How to fix: Refused to display https://www.youtube.com/watch?v=xxx in a frame because it set X-Frame-Options to SAMEORIGIN.

Putting a YouTube watch URL straight into an iframe src triggers an X-Frame-Options error — swap it for the embed URL.

[yum] Solution for 'Another app is currently holding the yum lock'

Fix yum's `Another app is currently holding the yum lock` error by killing the background yum process holding the lock.

Mac App 'ZIPANG' for Extracting and Compressing ZIP Files Without Character Corruption

ZIPANG is a Mac app that fixes ZIP filename mojibake between macOS and Windows by converting encodings on compress/extract.

How to Fix the Issue When 'Sign in with Google' Doesn't Appear in Zoom

How I brought back the missing 'Sign in with Google' button in the Zoom Mac app by reinstalling and restarting.