Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you're working with Git on a Mac and see the error fatal: Unable to create '/pat...

Chrome Certificate Error Invalid Authority: Diagnosis Checklist
When Chrome shows NET::ERR_CERT_AUTHORITY_INVALID and refuses to load a site, it...

Fix VS Code Git Authentication Failed for GitLab
If you see "Git authentication failed" in VS Code when pushing or pulling from a GitLab r...

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 VS Code Breakpoints Not Hitting in WSL
If you're debugging a project in WSL and VS Code breakpoints aren't being hit, you're...

Fixing NGINX Upstream Connection Refused SSL Errors
When NGINX logs upstream connection refused for an SSL backend, it usually means the...