Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

You run git pull and see: fatal: refusing to merge unrelated histories....

You're in VS Code, you open the terminal, type python script.py, and get p...

Fix 'Python Not Recognized' Error on Windows 11
You installed Python on Windows 11, but when you type python --version in Command Pr...

Fix pnpm ERR_PNPM_NO_OFFLINE_META: Step-by-Step Guide
You run pnpm install and see ERR_PNPM_NO_OFFLINE_META. This usually hap...

Fix Nginx Configuration Test Failure on Location Directive
When you run nginx -t and see an error like [emerg] invalid location directive...

Fix Cloudflare Wildcard Subdomain Origin Server Errors
You set up a wildcard DNS record in Cloudflare (e.g., *.example.com) pointing to you...