Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

If you see connect() failed (111: Connection refused) or connect() failed (13:...

Fixing Docker Build Context Canceled Permission Denied
You're running a Docker build, and suddenly it fails with an error like context cancele...

Fix Git Authentication Failed in VS Code on Linux
You're working in VS Code on Linux, try to push or pull, and get a popup: "Git authentica...

Fix npm run build Failed After Git Pull
You pulled the latest code from Git, ran npm run build, and got errors. This is a co...

Fix Python UnicodeDecodeError 'charmap' Codec
You're reading a file in Python and get:
UnicodeDecodeError: 'charmap' ...

Fix Windows 11 Setup Stuck at 99%
You're installing Windows 11 and the progress bar hangs at 99% for a long time. This is a kno...