Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When running pnpm on macOS, you may encounter a EACCES: permission denied error, esp...

When your Python script makes a POST request to an external API or web service, a slow or unrespo...

If you see errors like nginx: [emerg] open() "/var/www/html/index.html" failed (13:...

Fix git index.lock File Exists Error on Windows
If you see fatal: Unable to create 'index.lock': File exists. when running G...

Fix Git Merge Conflicts When Stash Changes Are Involved
You're mid-merge, and Git tells you there's a conflict. But you also have stashed changes...

Fix Nginx 502 Bad Gateway: Upstream Connection Refused
If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...