Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You set an environment variable in your shell, but Docker Compose ignores it. This is a common pi...

You try to write a file inside a running Docker container and get no space left on device

Fix 'Permission Denied' in VS Code Terminal for Python
You're in VS Code, you open the terminal, type python script.py, and get p...

Fix npm 'package.json not found' Error in Subdirectories
You're working in a subdirectory of your project, run npm install or npm r...

Fix Docker Build Context Canceled Timeout Errors
When running docker build, you might see an error like "context canceled"...

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