Checklists for software errors, setup, and tool workflows.

1. Reproduce

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3. Apply

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Latest checklists

You open the integrated terminal in VS Code, type a command you know is installed, and get ...

Fixing Nginx Upstream Connection Refused and Permission Denied
If you see connect() failed (111: Connection refused) or connect() failed (13:...

Python Requests Timeout Not Working: Fixes & Checks
You set a timeout in requests.get(url, timeout=5), but the request hangs for minutes...

Fix Docker Volume Permission Denied chown Errors
You mount a volume into a container, run a command that changes file ownership (e.g., chown...

Python Memory Error When Processing Large Text File: Fixes
You're processing a large text file in Python, and suddenly you hit a MemoryError

Fix Docker Compose Port Already Allocated on Linux
You run docker-compose up and get an error like Error starting userland proxy:...