Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you see an ENOENT error with pnpm, it usually means the system cannot find a file or directo...

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

Fix 'Permission Denied' in VS Code Terminal
When you open the integrated terminal in VS Code and run a command, you might see permissio...

Fix DNS Probe Finished NXDOMAIN Caused by Antivirus Blocking
You try to load a website and see DNS_PROBE_FINISHED_NXDOMAIN in Chrome, or simi...

Docker Desktop Engine Not Responding: Practical Fixes
You click Start in Docker Desktop, the whale icon spins, but nothing happens — o...

Fix Nginx 'Permission Denied' Upstream Errors
When Nginx logs permission denied while connecting to an upstream (e.g., a Unix sock...