Knowledge base for software setup, errors, and daily tool work.

How to Generate a Cloudflare Origin Certificate

If you're using Cloudflare as a reverse proxy, you may want to encrypt traffic between your s...

Fixing Node Sass Build Failures on Linux

Fix Nginx Upstream Connection Refused & Upstream Not Found

When you see upstream connection refused or upstream not found in your ...

Python Virtual Environment Not Activating on Mac: Fixes

You open Terminal, run source venv/bin/activate, and nothing happens—or you get an e...

Fix Chrome Certificate Error Invalid Authority on Mac

You're browsing in Chrome on a Mac and suddenly see a warning: Your connection is not...