Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see fatal: Unable to create 'index.lock': File exists. when running G...

You set a conditional breakpoint in VS Code, but execution either stops every time or never stops...

When browsing on Chrome for Android, you might encounter the error net::ERR_CERT_AUTHORITY_...

Fix Git Permission Denied in VS Code Terminal
You're working in VS Code, try to run a Git command in the integrated terminal, and get a ...

Fix Git Push Rejected Non-Fast-Forward After Pull
You run git pull, then git push, and get: ! [rejected] non-fast-f...

Fix 'Externally Managed Environment' Error on Linux
If you're on a modern Linux distribution (Ubuntu 23.04+, Debian 12+, Fedora 38+, etc.) and ge...