Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

If you're on a modern Linux distribution (Ubuntu 23.04+, Debian 12+, Fedora 38+, etc.) and ge...

You run git stash and see: fatal: Unable to create 'path/.git/index.lock&#...

Fixing Python Requests Connection Timeout Errors
When your Python script using the requests library hangs or raises a ConnectTi...

Docker Compose: Fix 'Port Already in Use on Host' Error
When you run docker compose up and see an error like port is already allocated...

Fix Nginx Upstream Connection Refused Socket Error
When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix Docker Build Context Canceled on Windows 10
When building a Docker image on Windows 10, you may see an error like build context cancele...