Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you're running a Node.js application under PM2 and seeing FATAL ERROR: CALL_AND_RETR...

Fix Angular Breakpoints Not Hit in VS Code
You set a breakpoint in an Angular component or service, start debugging in VS Code, and the brea...

Fix Nginx 502 Bad Gateway in Docker Alpine
You have an Nginx container running on Alpine Linux, and it returns a 502 Bad Gateway. This usual...

Chrome Crash on Startup: How to Fix with Safe Mode
If Chrome crashes immediately when you open it, you're not alone. This often happens after a ...

How to Run npm install Without sudo Permission Denied
When you run npm install -g or even a local install, you might see EACCES: per...

Fixing 'Command Not Found' in VS Code Terminal
You open the integrated terminal in VS Code, type a command you know is installed, and get ...