Activating 443 and letsencrypt=true in docker doesnt work

Hi there. I made a fresh install via docker for the actual version. As long as I dont activate port 443 and letsencrypt=true in the yaml, everything works fine. But when I activate both, it doesnt work.

I also getting the error: 2024/08/16 21:18:09 [emerg] 129#129: cannot load certificate “/shared/ssl/myurl.crt”: BIO_new_file() failed (SSL: error:80000002:system library::No such file or directory:calling fopen(/shared/ssl/myurl.crt, r) error:10000080:BIO routines::no such file)

I have no clue how to get this thing to work via ssl. Any idea?