Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You're connected to WiFi, the icon shows full bars, but websites won't load. This usually...

You mount a volume into a container, run a command that changes file ownership (e.g., chown...

Fix VS Code Terminal Not Working After Update
After a VS Code update, the integrated terminal may fail to start, show a blank window, or displa...

Nginx Permission Denied After Restart: Fixes That Work
After restarting nginx, you might see errors like connect() to unix:/var/run/php-fpm.sock f...

Debugging Nginx Redirect Loops: Step-by-Step Guide
You try to load a site and the browser keeps spinning or shows 'ERR_TOO_MANY_REDIRECTS'. ...

Fix npm run build Failed on macOS: Common Causes and Solutions
If you're on macOS and npm run build fails, you're not alone. This command o...