Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

If your Chrome browser isn't syncing bookmarks, passwords, or history on a school Chromebook,...

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

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...

Fix npm ENOENT Package.json Not Found & Permission Denied
You run npm install and get a wall of red: ENOENT: no such file or directory, ...

Git Merge Conflict: Keep Both Files Instead of One
When you run git merge and get a conflict, Git stops and marks the conflicting files...

Fix Python venv Not Activating in VS Code Terminal
When you create a Python virtual environment but it doesn't activate in the VS Code terminal,...