Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

You set environment variables in a .env file next to your docker-compose.yml

Fix 'Permission Denied' When Installing Python Packages Without sudo
If you see "Permission denied" when running pip install, you're not alon...

Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix pnpm ERR! Cannot Find Module – Practical Steps
When running pnpm install or pnpm start, you might see an error like:

Fix Git 'index.lock' File Exists Error on Linux
When working with Git on Linux, you might see an error like:
fatal: Unable to creat...

Fix VSCode Terminal Error spawn ENOENT
When you open the integrated terminal in Visual Studio Code and see the error spawn ENOENT<...