Fixing Nginx 502 Bad Gateway in Docker: Practical Steps
You set up Nginx as a reverse proxy in Docker, but instead of your app you see a 502 Bad Gateway....
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Edge Sync Not Syncing History
If your Microsoft Edge browser isn't syncing history across devices, you're not alone. Th...
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
You're seeing upstream connection refused in your Nginx error log, and your site...
Fix 'pip externally managed environment' Error for venv Setup
When creating a Python virtual environment on newer Linux distributions (e.g., Debian 12, Ubuntu ...
How to Fix Git Push Rejected (Non Fast-Forward Error)
When you run git push and see ! [rejected] with non fast-forward<...
Fix Cloudflare SSL Full Strict Certificate Mismatch Error
If you set Cloudflare SSL/TLS encryption mode to Full (strict) and see a certificate mismatch err...
Issue queue
SitemapChrome Black Screen on External Monitor Fix
Fix Git SSL Certificate Problem Unable to Get Local Issuer on Ubuntu
Git Push Rejected: Non-Fast-Forward and Permission Denied Fixes
Shared Hosting npm install Permission Denied Workaround
Company Network Chrome SSL Certificate Error Troubleshooting
Troubleshoot VS Code settings.json Save Error
Fix Docker Compose 'port 8080 already allocated' Error
Docker Compose Secrets vs Environment Variables: Practical Guide
Fix 'externally-managed-environment' in pip
Resolve Outlook Search Index Issues in Windows
How to Show Hidden Icons on Taskbar in Windows 10
How to Fix Docker Pull Authentication Required
Fix Git SSL Certificate Problem Unable to Get Local Issuer on Ubuntu
Git Push Rejected: Non-Fast-Forward and Permission Denied Fixes
Shared Hosting npm install Permission Denied Workaround
Company Network Chrome SSL Certificate Error Troubleshooting
Troubleshoot VS Code settings.json Save Error
Fix Docker Compose 'port 8080 already allocated' Error
Docker Compose Secrets vs Environment Variables: Practical Guide
Fix 'externally-managed-environment' in pip
Resolve Outlook Search Index Issues in Windows
How to Show Hidden Icons on Taskbar in Windows 10
How to Fix Docker Pull Authentication Required