Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

When you run npm install or npm start and see npm ERR! package.js...

Fix VS Code Terminal Not Opening WSL
You open VS Code, switch to the integrated terminal, select WSL as your default shell, and nothin...

Fix Docker Compose Environment Variable Substitution Failed
When running docker compose up, you might see errors like failed to resolve co...

Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix Git Lock File Not Deleted After Crash
If Git reports a lock file error after a crash, it usually means a previous Git operation was int...

Fix VS Code Terminal Not Opening on Windows 10
When you press Ctrl+` or click the Terminal panel in VS Code and nothing happens, it's usuall...