Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When cloning or pulling from a Git repository, you may see:

fatal: unable to access...

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'...

Fix 'Externally Managed Environment' Error on Linux
If you're on a modern Linux distribution (Ubuntu 23.04+, Debian 12+, Fedora 38+, etc.) and ge...

Fix Python UnicodeDecodeError with os.listdir
When you run os.listdir() on a directory containing files with non-ASCII names, you ...

How to Update Node Version for Package Compatibility
When you run npm install and see warnings about engine incompatibility or errors lik...

Fix VS Code GitHub Authentication Failed Error
You're trying to push or pull code in VS Code, but you see an error like Authentication...