Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

You run npm run build and get a wall of TypeScript errors. The build fails, and you&...

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

You run npm install and see an error like Node Sass does not yet support your ...

Fixing Nginx Upstream Connection Refused and Permission Denied
If you see connect() failed (111: Connection refused) or connect() failed (13:...

Fix npm run build Syntax Error: Common Causes and Solutions
When you run npm run build and see a syntax error, the build process stops immediate...

Fix Edge Sync Stuck on Sign-In Loop
You open Microsoft Edge, try to sign in to sync your data, and it keeps looping back to the sign-...