Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

You click 'Check for updates' and see the download stuck at 0% for minutes or hours. This...

You run npm run build and it fails with errors like SyntaxError: Unexpected to...

Python Virtual Environment Not Activating on Mac: Fixes
You open Terminal, run source venv/bin/activate, and nothing happens—or you get an e...

How to Fix Git index.lock File Exists Error on Mac
If you're working with Git on a Mac and see the error fatal: Unable to create '/pat...

Fix Chrome Sync Not Working on Android
If Chrome sync has stopped working on your Android device, bookmarks, passwords, and open tabs wo...

Fix Permission Denied on chmod in VS Code Terminal
You're running chmod in the VS Code integrated terminal and seeing 'permissi...