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

Fixing Cloudflare Wildcard Subdomain Proxy Errors

If you've set up a wildcard DNS record (e.g., *.example.com) in Cloudflare and a...

Fixing Cloudflare 522 Errors Caused by Server Resource Exhaustion

If you're seeing a Cloudflare 522 error, it means your web server is not responding in time. ...

Fix git index.lock File Exists Error on Windows

If you see fatal: Unable to create 'index.lock': File exists. when running G...

Fix Chrome Certificate Error: Invalid Authority SSL Certificate

If Chrome shows 'Your connection is not private' with 'NET::ERR_CERT_AUTHORITY_INVALI...

Fix Nginx Permission Denied for Static Files

Common Causes

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

Fix VSCode IntelliSense Not Working for Rust

You open a Rust project in VSCode, start typing, and get no completions, hover info, or error hig...