Checklists for software errors, setup, and tool workflows.

Fix 'pip externally managed environment' Error in Python 3.12

If you're using Python 3.12 on a modern Linux distribution (like Fedora 38+, Ubuntu 23.04+, o...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix Chrome Crash on Startup Due to Corrupt User Profile

If Chrome crashes immediately when you open it, or shows a warning that your profile may be corru...

Fix Cloudflare Wildcard Subdomain Not Working with WordPress

You set up a wildcard DNS record in Cloudflare (e.g., *.example.com) expecting all subdomains to ...

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 Permission Denied on Linux

You run npm run build on your Linux machine and see Permission denied. ...