Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

If you're using a multi-root workspace in VS Code and finding that breakpoints in some folder...

If you enable Cloudflare's SSL/TLS encryption and set it to Full (Strict), y...

When Nginx returns 502 Bad Gateway or logs upstream connection refused timeout...

Chrome Extensions Not Loading: Quick Fixes
You open Chrome, click the extensions icon, and nothing appears—or your extensions are grayed out...

Fix Git 'index.lock' File Exists Error in SourceTree
If you use SourceTree and see an error message like fatal: Unable to create 'path/to/.g...

Fix VSCode Git Auth Failed: Expired Token
You're working in Visual Studio Code, try to push or pull, and see an error like "Git: Au...