Can't Login but everything is up

Hey together, first time using Taiga. The Containers are all running, the website is reachable but either the “Login” is working nor the Frontpage itself. Can anyone help / have an Idea what is going on here? Images attached. Thanks in Advance

Second Error/Same on Discovery Page

Hi there,

Can you share the logs and your config? Please anonimize stuff like your domain, SMTP config (except for the port, use tls, etc) and any other personal data.

Best!