Fix Nginx 502 Bad Gateway with Docker Multiple Containers
If you run Nginx as a reverse proxy in front of multiple Docker containers, a 502 Bad Gateway err...
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 Firefox Secure Connection Failed Error
When Firefox shows 'Secure Connection Failed' and won't load a site, it usually means...
Fix git index.lock File Exists Error on Windows
If you see fatal: Unable to create 'index.lock': File exists. when running G...
Fixing Cloudflare 521 Error After Server Restart
You restart your server, wait for it to come back up, then visit your site—only to see a Cloudfla...
How to Update Node Version for Package Compatibility
When you run npm install and see warnings about engine incompatibility or errors lik...
Checklist for Pushing Large Files with Git
You've likely hit this: you try to push a commit, and Git rejects it because a file is too la...
Issue queue
SitemapDocker Prune Not Freeing Enough Space: Practical Fixes
Fix Edge Sync Stuck on Preparing Sync
How to Fix Git Merge Conflict Error Code 128
nginx configuration test failed unexpected end of file troubleshooting
Ubuntu Docker Disk Space Full Error Fix
Fix Missing IntelliSense in VS Code Remote WSL
How to Fix VS Code Git Changes Not Showing on Windows 11
ERR_NAME_NOT_RESOLVED Fix: Router DNS Settings
How to Resolve VSCode Docker Permission Errors
Resolving Python Package Version Conflicts
Python Dependency Hell: Fixing Conflicts Across Requirements Files
Docker Pull Access Denied After Login: Troubleshooting Guide
Fix Edge Sync Stuck on Preparing Sync
How to Fix Git Merge Conflict Error Code 128
nginx configuration test failed unexpected end of file troubleshooting
Ubuntu Docker Disk Space Full Error Fix
Fix Missing IntelliSense in VS Code Remote WSL
How to Fix VS Code Git Changes Not Showing on Windows 11
ERR_NAME_NOT_RESOLVED Fix: Router DNS Settings
How to Resolve VSCode Docker Permission Errors
Resolving Python Package Version Conflicts
Python Dependency Hell: Fixing Conflicts Across Requirements Files
Docker Pull Access Denied After Login: Troubleshooting Guide