Nginx container always restated

Hi All,
I just tried to setup a kobo in my server, I follow the setups like suggested on github. I am installing these behind reverse proxy.
I notice that all container is running well, but only one has problem, the nginx container is always restarted after a few seconds.

here is the error log on kobo-docker/log/nginx/error.log
2021/01/15 04:11:07 [emerg] 1#1: invalid server name or wildcard “kc…internal” on 0.0.0.0:80
2021/01/15 04:12:09 [emerg] 1#1: invalid server name or wildcard “kc…internal” on 0.0.0.0:80
2021/01/15 04:13:10 [emerg] 1#1: invalid server name or wildcard “kc…internal” on 0.0.0.0:80

I notice that kc is the kobocat prefix…

any suggestions on this one?