Collabora: Internal Server Error

I just installed collabora and when I try to open a .odt file, I get an internal server error. Here are the relevant docker logs:

wsd-00026-00027 18:55:11.327815 [ prisoner_poll ] WRN  ForKit not responsive for 38538 ms forking 1 children. Resetting.| wsd/LOOLWSD.cpp:350
wsd-00026-00034 21:46:33.836756 [ websrv_poll ] ERR  Socket #23 SSL BIO error: error:1407609C:SSL routines:SSL23_GET_CLIENT_HELLO:http request (errno: Success)| ./net/SslSocket.hpp:273
wsd-00026-00034 21:46:33.855308 [ websrv_poll ] ERR  Error while handling poll for socket #23 in websrv_poll: error:1407609C:SSL routines:SSL23_GET_CLIENT_HELLO:http request| ./net/Socket.hpp:474

Full logs

I am using nginx on the same server as the docker container is running on. I set everything up following this guide where my cloud.domaine.com is nextcloud.<domain>.host and office.example.com is office.<domain>.host. I edited my /etc/hosts so both of these domains point to 127.0.0.1.