404 with documents although Collabora ist up? --> New Entrypoints with newer version of Collabora

If anyone ist facing the problem, opening documents in collabora get’s a 404 although the office server works:

Try to control you reverse proxy configuration.

They changed the entrypoints as describes here: https://sdk.collaboraonline.com/docs/installation/Proxy_settings.html#reverse-proxy-with-nginx-webserver

From loaleafled to browser and from lool to cool - whyever.

Took me about an hour to find it out. But It’s easy to fix.