Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

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

VSCode IntelliSense Not Working for React: Fixes
You open a React component in VSCode, start typing a prop or a hook, and get no suggestions. Inte...

Increase Git Timeout for Large Repositories
When cloning or fetching a large repository, Git may time out before the transfer completes. This...

How to Disable pip's Externally Managed Environment Warning
If you see the error error: externally-managed-environment when trying to install Py...

Remote Desktop Connection Fails: RDP Port Not Open
You try to connect via Remote Desktop, but the client says it can't connect. One of the most ...

Checklist for Troubleshooting Nginx Permission Denied Errors
Understanding the Problem
When Nginx returns a 403 Forbidden or logs an error like ...