feddit.de has been giving “Server error” for some time but I read that the server is still working when using a Lemmy app. Tried the Photon front-end today and choosing feddit.de as instance.

My question (I’m just curious, I have no account on feddit.de) is : Can an alternative front-end on their server co-exist with the other server software ? I guess it would be a matter of installing Photon and then point nginx configuration to that. Or am I missing something crucial ?