Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You run npm install or npm start and get something like:

...

Docker Compose Port Already Allocated: Checklist
You run docker-compose up and get an error like Error starting userland proxy:...

How to Fix Nginx Configuration Test Failed Error
When you run nginx -t and see "test failed", it means nginx found a problem ...

Fix Git SSL Certificate Problem on Corporate Networks
If you see git SSL certificate problem: unable to get local issuer certificate while...

How to Fix Nginx Permission Denied Error
When Nginx returns a 403 Forbidden or logs a "permission denied" error, it usually means ...

Fix npm run build Failed with PostCSS Error
You run npm run build and see a PostCSS error. This often happens after updating pac...