Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you're seeing error: externally-managed-environment when using pip on a moder...

You open Command Prompt, type python, and see 'python' is not recogniz...

Fix 'Permission Denied' When Running pip install --user
If you see Permission denied when running pip install --user somepackage

Python Dependency Conflict Checklist: Diagnose & Fix
You're installing a package with pip, and suddenly you see a wall of red text: ERROR: C...

Fix Chrome Extensions Not Loading Configuration
You install a Chrome extension, configure it carefully, and then—nothing. The extension icon is g...

How to Fix Node Version Mismatch in a Project
You cloned a project, ran npm install, and got errors about engine incompatibility. ...