Nginx problem to start

Hi. Have installed Nginx from the add-on. But Nginx fails to start.

[13:47:39] INFO: Running nginx...
nginx: [emerg] cannot load certificate "/ssl/fullchain.pem": BIO_new_file() failed (SSL: error:02001002:system library:fopen:No such file or directory:fopen('/ssl/fullchain.pem','r') error:2006D080:BIO routines:BIO_new_file:no such file)
[cmd] /run.sh exited 1
[cont-finish.d] executing container finish scripts...
[cont-finish.d] done.
[s6-finish] waiting for services.
[s6-finish] sending all processes the TERM signal.

Im running Homeassistant OS virtually in KVM.
I have reinstalled both nginx and MariaDB

homeassistant is new for me.

/Niclas

Your SSL cert files are missing, you need to create them. This is done by letsencrypt or duckdns addons.

Thanks! Worked after installing let´s encrypt