Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

Fix ENOENT Error: package.json Not Found in React App

Fix ENOENT Error: package.json Not Found in React App

When running npm start or npm install in a React app, you may see an er...

Chrome Extensions Not Loading: Common Causes and Fixes

Chrome Extensions Not Loading: Common Causes and Fixes

You open Chrome and notice your extensions are missing from the toolbar, or they appear greyed ou...

Clear Chrome Certificate Cache to Fix NET::ERR_CERT_AUTHORITY_INVALID

Clear Chrome Certificate Cache to Fix NET::ERR_CERT_AUTHORITY_INVALID

When you see NET::ERR_CERT_AUTHORITY_INVALID in Chrome, it usually means the browser...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Fix npm run build Failed Due to Webpack Configuration

Fix npm run build Failed Due to Webpack Configuration

When npm run build fails, the error often points to a webpack configuration issue. T...

Git Merge Unrelated Histories with Conflicts: How to Resolve

Git Merge Unrelated Histories with Conflicts: How to Resolve

You try to merge two git branches and get an error like fatal: refusing to merge unrelated ...