Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

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Latest checklists

When you run git merge and get error: merge conflict followed by ...

Fix npm run build Failed Due to Missing Dependencies
When you run npm run build and it fails with errors about missing dependencies, the ...

Fixing Nginx Upstream Connection Refused on Port 443
You see "upstream connection refused" in your Nginx error log when proxying requests to p...

VSCode IntelliSense Not Working for React: Fixes
You open a React component in VSCode, start typing a prop or a hook, and get no suggestions. Inte...

Fix Nginx Upstream Connection Refused Behind Cloudflare
If you see upstream connection refused in your Nginx error logs while using Cloudfla...

Docker Prune Not Freeing Enough Space: Practical Fixes
You run docker system prune -a expecting a big space recovery, but the freed space i...