Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see 'EACCES: permission denied' when running npm install while using ...

You try to install a Python package with pip and get a PermissionError: [Errno 13] Permissi...

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

Fix Node.js package.json Engine Check Failures
When you run npm install and see an error like EBADENGINE or engi...

Fix 'Python Not Recognized' Error on Windows 11
You installed Python on Windows 11, but when you type python --version in Command Pr...

Nginx Redirect Loop: Common Causes and Fixes
You set up a redirect in nginx, but now your browser shows 'redirect loop' or 'too ma...