Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listChrome Sync Not Working on Mac: Fixes That Actually Work
You open Chrome on your Mac, expecting your bookmarks and passwords to be there, but nothing sync...
Fix 'docker network not found' After Prune
If you run docker network prune and later see errors like network not found
Fix npm ERR! enoent ENOENT: package.json Not Found on Linux
If you're running npm on Linux and see npm ERR! enoent ENOENT: no such file or director...
Docker Compose .env File Not Loading: Common Fixes
You set environment variables in a .env file next to your docker-compose.yml
Docker Network Not Found But Exists: How to Fix
You run a Docker container and get an error like docker: Error response from daemon: networ...
Topic paths
Quick titles
Git Push Rejected Non Fast Forward: Troubleshooting ChecklistCloudflare 521 Wildcard Subdomain FixChrome Sync Broken by Proxy? Here's the FixPython venv Permission Denied Error: Causes and FixesHow to Fix Edge Sync Not Syncing HistoryTroubleshooting Nginx Upstream Connection IssuesWindows 11 Update Stuck at 0% Service Not Running FixVS Code IntelliSense Disabled? Here's How to Enable It