Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If your Windows 11 laptop shows full WiFi bars but browsers say “No internet,” a common culprit i...

You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...

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

Fix Nginx Permission Denied for Static Files
Common Causes
When Nginx returns a 403 Forbidden or 'permission denied' error for...

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...

Fixing VS Code Git Authentication Failed Error
If you see "Git authentication failed" when pushing or pulling in VS Code, it usually mea...