Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

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

You're editing a file in Visual Studio Code, hit Ctrl+S, and get an error: "Failed to sav...

When installing Python packages with pip, you might see an error ending with exit code 1

Fix Nginx Upstream Connection Refused Error
When Nginx returns upstream connection refused in your error logs, it means Nginx tr...

VSCode Integrated Terminal Not Showing: Fixes to Try
You open the integrated terminal in Visual Studio Code using Ctrl+` (or Cmd+`<...

Docker Compose Port Mapping: Fix Common Issues
You've defined a ports section in your docker-compose.yml, but the ...