Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You see error 0x80070002 when checking for updates. It usually means Windows Update can't fin...

You're working in a subdirectory of your project, run npm install or npm r...

Fix Git Merge Conflicts When Stash Changes Are Involved
You're mid-merge, and Git tells you there's a conflict. But you also have stashed changes...

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...

Fix VSCode Terminal Not Opening with Git Bash
You open Visual Studio Code, press Ctrl+` to bring up the terminal, and expect Git Bash. Instead,...

Cloudflare 521 Error: Troubleshooting and Fixes
When you see a 521 Web Server Is Down error, it means Cloudflare cannot establis...