Checklists for software errors, setup, and tool workflows.

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Latest checklists

You run npm install or npm start and get npm ERR! package.json no...

Fixing Nginx Upstream Connection Refused in Load Balancing
When Nginx load balancing returns upstream connection refused, it means one or more ...

Remove Large Files from Git History
If your Git repository is bloated because a large file was committed and later removed, the file ...

How to Set npm Prefix to Avoid Permission Denied Errors
If you've seen EACCES: permission denied when running npm install -g

How to Fix the Git index.lock File Exists Error
You're in the middle of a Git operation—commit, merge, or rebase—and Git stops with: fa...

Fix 'node-sass build failed python not found' Error
If you see node-sass build failed python not found when running npm install