Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

When you run git push and see ! [rejected] with non fast-forward<...

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...

Git index.lock File Exists Even After Deleting: Fixes
You delete the .git/index.lock file, but Git still says it exists. This can happen d...

Fix pip Externally Managed Environment Errors
If you're on a modern Linux distribution and see error: externally-managed-environment<...

Fix 'Permission Denied' in VS Code Terminal for Node.js
You're working in VS Code, run npm install or node app.js, and get ...

Fix VSCode IntelliSense Not Working for PowerShell
If you're editing PowerShell scripts in VS Code and IntelliSense stops showing suggestions (n...