App.vhost on nginx malformed on each save

Hello,
whenever I save the hosts settings for my master server the related file /etc/nginx/sites-available/apps.vhost gets rewritten (which is fine),
but every time it insert invalid ssl clauses and for the life of me I cannot find out where this comes from.
I have NOT placed a custom apps.vhost and I checked that the current factory apps.vhost template is unmodified.

But everytime I save I get his:

Code:

server {
        listen 8081 ssl; ssl_certificate /usr/local/ispconfig/interface/ssl/ispserver.crt; ssl_certificate_key /usr/local/ispconfig/interface/ssl/ispserver.key ssl http2;
        listen [::]:8081 ssl; ssl_certificate /usr/local/ispconfig/interface/ssl/ispserver.crt; ssl_certificate_key /usr/local/ispconfig/interface/ssl/ispserver.key ssl http2 ipv6only=on;
...

instead of this:

Code:

server {
        listen 8081 ssl http2;
        listen [::]:8081 ssl http2 ipv6only=on;
...

Help! Where might this come from?

Best regards
Carsten

 

Sorry, figured this out.
I had this entered in Apps VHost port setting.