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

Fix 'pip externally managed environment' on Ubuntu 23.04

If you're on Ubuntu 23.04 (Lunar Lobster) and try to install a Python package with pip, you m...

Docker Container Exits Immediately on Windows: How to Fix

You start a Docker container on Windows, and it stops within seconds. The container exits immedia...

Cloudflare 522 Error After Server Migration: Fixes That Work

If you've just migrated your website to a new server and now see a Cloudflare 522 error (conn...

Fix Cloudflare Origin Certificate with Let's Encrypt

If your origin server is rejecting the Cloudflare origin certificate—perhaps because of a SAN mis...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...

Cloudflare 522 Error: Analyzing Server Logs for a Fix

You're seeing a 522 error from Cloudflare. That means Cloudflare connected to your origin ser...