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

How to Fix Cloudflare 521 Error with Wildcard Subdomains

If you're seeing a Cloudflare 521 error on a wildcard subdomain (e.g., *.example.com), the or...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer Certificate

Docker Compose Environment Variable Not Set in Dockerfile

You set an environment variable in your docker-compose.yml file, but when you try to...

How to Clear pnpm Cache: Step-by-Step Guide

If you're seeing unexpected build errors, outdated dependencies, or running low on disk space...

Cloudflare SSL Full Strict Troubleshooting Steps

If you have set Cloudflare SSL/TLS encryption to Full (strict) and your site shows errors like 52...

Fix Windows Defender Real-Time Protection After Clean Boot

You've performed a clean boot to troubleshoot an issue, but now Windows Defender's real-t...