Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see the error error: externally-managed-environment when running pip in...

Nginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Fix 'pip install' Permission Denied on Ubuntu
When you run pip install somepackage on Ubuntu and see a Permission denied

Fix Chrome Memory Spikes When Watching Videos
You're watching a video in Chrome, and suddenly the system slows down, fans spin up, or tabs ...

Fix Git Clone Connection Timed Out Due to Firewall
You run git clone and after a long pause see connection timed out. This...

Fix VS Code Permission Denied on Network Drive
You open a folder on a network drive in VS Code, and when you try to save a file or run a task, y...