Checklists for software errors, setup, and tool workflows.

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Fix Nginx Upstream Connection Refused in Proxy Pass

When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Docker Compose Port Already Allocated: Checklist
You run docker-compose up and get an error like Error starting userland proxy:...

Fix npm run build Failure Due to Node Version Mismatch
You run npm run build and it fails with errors like SyntaxError: Unexpected to...

Fix Docker Compose Port Allocation Errors
When you run docker compose up and see an error like "port is already alloca...

Fix 'Permission Denied' When Running pip install --user
If you see Permission denied when running pip install --user somepackage

Fix Windows Cannot Access Shared Folder Error 0x80070035
When you try to access a shared folder on another computer and see "Windows cannot access \\c...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Nginx Upstream Connection Refused in Proxy Pass

Docker Compose Port Already Allocated: Checklist

Fix npm run build Failure Due to Node Version Mismatch

Fix Docker Compose Port Allocation Errors

Fix 'Permission Denied' When Running pip install --user

Fix Windows Cannot Access Shared Folder Error 0x80070035

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