Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see ! [rejected] and non-fast-forward when running git pus...

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...

Docker Compose .env File Not Loading: Common Fixes
You set environment variables in a .env file next to your docker-compose.yml

Fixing Node Version Mismatch with package.json Engines
You run npm install or node app.js and see a warning or error about the...

Fix Nginx Upstream Connection Refused Error
If you see upstream connection refused in your Nginx error logs, it means Nginx trie...

How to Allow Unrelated Histories in Git Merge
If you see the error fatal: refusing to merge unrelated histories when running