Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

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 ...

Fix VS Code Breakpoint Not Hit in Express App
You set a breakpoint in your Express route handler, start debugging, and the breakpoint is never ...

Docker Compose Env File Not Being Read: Fixes
You set up a .env file for your Docker Compose project, but variables aren't bei...

Fix Nginx 403 Forbidden: Permission Denied Errors
You're trying to access a site served by nginx, but you get a 403 Forbidden ...

Chrome Won't Open After Update: Step-by-Step Fix
You updated Chrome, and now it won't open—no window, no error, just nothing. This is a common...