Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You run git stash and see: fatal: Unable to create 'path/.git/index.lock&#...

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

npm package.json Not Found: Troubleshooting Checklist
When you run npm install or npm start and see package.json not fo...

Fix pnpm Not Working After Node.js Update
After updating Node.js, you may find that pnpm commands fail with errors like command not f...

Fix Python Memory Error When Reading Large Files
When you try to read a file that's larger than your available RAM, Python raises a Memo...

Python Requests Timeout Not Waiting: Fixes and Checks
You set a timeout in Python's requests library, but the call either hangs foreve...