Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If Chrome shows 'Your connection is not private' with 'NET::ERR_CERT_AUTHORITY_INVALI...

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

Checklist for Pushing Large Files with Git
You've likely hit this: you try to push a commit, and Git rejects it because a file is too la...

How to Clear pnpm Cache: Step-by-Step Guide
If you're seeing unexpected build errors, outdated dependencies, or running low on disk space...

Fix 'Package Requires Different Node Version' Error
You try to install or run a package and get an error like package requires a different Node...

Fix Git 'index.lock file exists' Error
When you see the error fatal: Unable to create 'path/.git/index.lock': File exists....