Fix Nginx 502 Bad Gateway with Docker and PHP-FPM
You have a Docker setup with Nginx proxying to a PHP-FPM container, and you're getting a 502 ...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesDocker Build Context Canceled: Causes and Fixes
When running docker build, you might see an error like build context canceled<...
Windows 11 Blue Screen After Driver Update: Rollback Fix
You update a driver in Windows 11, and then you get a blue screen on reboot. This is a common pro...
Windows 11 Installation Assistant Not Completing Setup: Fixes
You launch the Windows 11 Installation Assistant, it runs for a while, then either stalls, throws...
Fix Docker Compose 'port 8080 already allocated' Error
When running docker-compose up, you may see an error like Error: Port 8080 is ...
Fix Windows Update Service Not Running with Permission Denied
You try to run Windows Update and get an error that the service is not running. When you try to s...
Issue queue
SitemapTroubleshooting Cloudflare Wildcard Record Problems
Cloudflare Error 521: Web Server Down Checklist
Fix Node Sass Compatibility by Changing Node Version
Fix npm Global Install Permission Denied Without Sudo
Docker Compose Environment Variable Not Working
Fix Docker Compose Port Already Allocated
DNS Cache Clear Guide for ERR_NAME_NOT_RESOLVED
Fix 'docker network not found' When Connecting Container
Fix Docker Volume Permission Denied as Root
Pip Externally Managed Environment vs Virtual Environment: Fixes
Resolving Module Not Found in npm Build
Chrome Extensions Not Loading: Fix 'Permission Denied' Errors
Cloudflare Error 521: Web Server Down Checklist
Fix Node Sass Compatibility by Changing Node Version
Fix npm Global Install Permission Denied Without Sudo
Docker Compose Environment Variable Not Working
Fix Docker Compose Port Already Allocated
DNS Cache Clear Guide for ERR_NAME_NOT_RESOLVED
Fix 'docker network not found' When Connecting Container
Fix Docker Volume Permission Denied as Root
Pip Externally Managed Environment vs Virtual Environment: Fixes
Resolving Module Not Found in npm Build
Chrome Extensions Not Loading: Fix 'Permission Denied' Errors