Debug Server Errors 5xx   Sometimes you get an 5xx error after loading your domain and now you wonder how to solve this issue. Follow these steps to find the problem:   1.) Does the NPM container work? If you can not open NPM's WebUI, then your container is not properly setup. Check your container's logs to find out what's wrong.   2.) Is NPM online? Obtain your public IPv4/IPv6 through a website like https://www.top10vpn.com/tools/what-is-my-ip/. If