Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you use Cloudflare's proxy (orange cloud), you can set up an origin certificate to encrypt...

You run npm install or npm start and get npm ERR! package.json no...

Checklist for Nginx Configuration Test Failure
When you run nginx -t and get a failure, the server won't reload or restart. Thi...

Fix Python Permission Denied When Installing Packages on Mac
If you see a 'permission denied' error when running pip install somepackage ...

Fix Node.js Out of Memory When Building React Apps
When building a React app, you might see a fatal error like FATAL ERROR: Ineffective mark-c...

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