Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see the error 'fatal: Unable to create 'path/.git/index.lock': File exists'...

After upgrading pip, you might see errors like PermissionError: [Errno 13] Permission denie...

Fix Nginx Configuration Test Failure After Adding Proxy Pass
You add a proxy_pass directive to an Nginx server block, run nginx -t, ...

Fix Nginx Upstream Connection Refused in Docker
You have Nginx running, either on the host or in a container, proxying to another Docker containe...

Fix 'docker network not found' After Prune
If you run docker network prune and later see errors like network not found

Fix pnpm Permission Denied Errors on macOS
When running pnpm on macOS, you may encounter a EACCES: permission denied error, esp...