Host not found in “None” of the “listen” directive

[rg305]

I don't understand how this:
include /etc/nginx/sites-enabled/*;
includes this:
configuration file /etc/nginx/sites-enabled/gardmikael
And confirmed by this:

@gardmikael

Deploying Certificate to VirtualHost /etc/nginx/sites-enabled/gardmikael
nginx: [emerg] invalid port in "[::]:None" of the "listen" directive in /etc/nginx/sites-enabled/gardmikael:23
Rolling back to previous server configuration...

But you showed this in that folder:

@gardmikael

lrwxrwxrwx 1 root root 45 Feb 10 20:39 gardmikael.no.conf -> /etc/nginx/sites-available/gardmikael.no.conf

How does:
/etc/nginx/sites-enabled/gardmikael
equal
/etc/nginx/sites-enabled/gardmikael.no.conf

Maybe a hidden file?
ls -la /etc/nginx/sites-enabled/