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

Fix VSCode Terminal Permission Denied in Python venv

If you see bash: /path/to/venv/bin/activate: Permission denied when trying to activa...

Fix Nginx 502 Bad Gateway with Docker Socket

You have an Nginx container proxying requests to another container via the Docker socket, and you...

How to Fix Cloudflare 521 Error Due to Proxy Issues

If you see a Cloudflare 521 error, the message usually says something like “Web server is down.” ...

How to Fix Nginx Redirect Loop in Server Block

You set up a server block in Nginx, but now the browser keeps redirecting—http to https, or www t...

Fix Cloudflare Wildcard Subdomain Redirect Loop