Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You're running Docker on a Mac and suddenly get an error: no space left on device

Docker Compose Environment Variable Not Set in Container: Fixes
You ran docker-compose up, but the environment variable you defined isn't availa...

Fix PowerShell Permission Denied in VS Code
When you try to run a PowerShell script in VS Code and get a "permission denied" error, i...

How to Restore Missing Windows Taskbar Icons
You open Windows and notice some taskbar icons are gone—maybe the volume, network, or battery ico...

How to Allow Unrelated Histories in Git Merge
If you see the error fatal: refusing to merge unrelated histories when running

Fix Nginx 502 Bad Gateway with Docker and PHP-FPM
You have a Docker setup with Nginx proxying to a PHP-FPM container, and you're getting a 502 ...