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 Change npm Directory to Avoid Permission Denied
If you've seen "EACCES: permission denied" when running npm install -g, ...
Fix Python Permission Denied When Running pip install -r requirements.txt
You run pip install -r requirements.txt and get a PermissionError or
Fix VS Code Breakpoint Not Hit in Express App
You set a breakpoint in your Express route handler, start debugging, and the breakpoint is never ...
Fix 'Permission Denied' in VS Code Terminal on Linux
You're working in VS Code on Linux, open the integrated terminal, and run a command—only to s...
How to Fix Nginx Upstream Connection Refused on Port 80
When nginx logs show "upstream connection refused" while connecting to port 80, it means ...
Issue queue
SitemapNginx Upstream Connection Refused in Docker: How to Fix
Git Push Rejected: Non-Fast-Forward Error Fix
Router Settings for ERR_NAME_NOT_RESOLVED
Git Clone Timeout Error on Mac – Common Fixes
Fix Permission Denied When Saving in VS Code Mac
Git Non-Fast-Forward Push Error Fix
Fix VS Code IntelliSense Not Showing Suggestions
Docker Compose Environment Variables: .env, Shell, and More
Chrome Memory Use Too High on Mac? Here's How to Fix It
Troubleshoot Docker Container Exiting Instantly
Using Git LFS with GitHub: A Practical Tutorial
Chrome Crashing on Startup from Malware: Fix
Git Push Rejected: Non-Fast-Forward Error Fix
Router Settings for ERR_NAME_NOT_RESOLVED
Git Clone Timeout Error on Mac – Common Fixes
Fix Permission Denied When Saving in VS Code Mac
Git Non-Fast-Forward Push Error Fix
Fix VS Code IntelliSense Not Showing Suggestions
Docker Compose Environment Variables: .env, Shell, and More
Chrome Memory Use Too High on Mac? Here's How to Fix It
Troubleshoot Docker Container Exiting Instantly
Using Git LFS with GitHub: A Practical Tutorial
Chrome Crashing on Startup from Malware: Fix