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 notesHow to Fix Nginx Redirect Loop 302 Errors
You're seeing a 302 redirect loop in Nginx — the browser keeps bouncing between URLs until it...
Fix DNS Probe Finished NXDOMAIN Error on Mac
You're browsing on your Mac and suddenly a site won't load, showing the error DNS...
Fix Chrome Black Screen in Remote Desktop with Hardware Acceleration Off
You're remoted into another machine, open Chrome, and the screen goes black—or the browser wi...
Prevent Git Index Lock File Creation: Practical Fixes
If you see fatal: Unable to create 'path/to/.git/index.lock': File exists., ...
How to Fix Git Push Rejected Non-Fast-Forward Error
When you run git push and see “rejected – non-fast-forward”, it means your local bra...
Issue queue
SitemapTroubleshooting 'port is already allocated' in Docker Compose
Nginx Too Many Redirects: Troubleshooting Guide
Troubleshoot npm ENOENT Error in React Projects
Fix Windows Explorer Restarting with SFC Scannow
How to Clear Docker Disk Space on Windows
Windows 11 Update Service Stopped? Here's How to Restart It
How to Fix Nginx 403 on Mounted Drive
Cloudflare Wildcard Subdomain SSL and DNS Guide
Fix VS Code Git Not Detecting Changes After .gitignore Update
Cloudflare Origin Certificate Troubleshooting Checklist
Setting Up Cloudflare Origin SSL on Apache
Fix VSCode Terminal Permission Denied in Python venv
Nginx Too Many Redirects: Troubleshooting Guide
Troubleshoot npm ENOENT Error in React Projects
Fix Windows Explorer Restarting with SFC Scannow
How to Clear Docker Disk Space on Windows
Windows 11 Update Service Stopped? Here's How to Restart It
How to Fix Nginx 403 on Mounted Drive
Cloudflare Wildcard Subdomain SSL and DNS Guide
Fix VS Code Git Not Detecting Changes After .gitignore Update
Cloudflare Origin Certificate Troubleshooting Checklist
Setting Up Cloudflare Origin SSL on Apache
Fix VSCode Terminal Permission Denied in Python venv