Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You start a Docker container and it exits right away. The container logs show no errors, or the e...

If you're seeing error: externally-managed-environment when trying to pip ...

Fixing pip Externally-Managed Environment Errors
If you see the error error: externally-managed-environment when running pip in...

Debugging Nginx Redirect Loops: Step-by-Step Guide
You try to load a site and the browser keeps spinning or shows 'ERR_TOO_MANY_REDIRECTS'. ...

Python Virtual Environment Not Activating: Common Fixes
You run source venv/bin/activate (or venv\Scripts\activate on Windows) ...

Fix npm run build Failure from Missing Env Variables
You run npm run build and get an error like Error: Missing required environmen...