Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You open a React component in VSCode, start typing a prop or a hook, and get no suggestions. Inte...

If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

Fix 'python command not found' After Windows Upgrade
After upgrading Windows 10 to 11 (or a major feature update), many users find that typing p...

Fixing Python UnicodeDecodeError When Reading UTF-16 Files
You open a file in Python and get UnicodeDecodeError: 'utf-8' codec can't decod...

Fix VS Code Permission Denied After Update
After updating Visual Studio Code, you might see 'permission denied' errors when trying t...

Git index.lock File Exists: Quick Fix Checklist
You try to run a Git command and see fatal: Unable to create 'path/.git/index.lock'...