Problem on installing roundcube

So I am pretty new at this and I’ve tried to install roundcube via Virtualmin for one of my domains.
I have a VPS with Ubuntu 16.04.4 LTS. This is all that I am getting:

I also have php 7.0.30 so I do not thing that this should be a problem. I tried to looks this up and get some new repositories but nothing changed. Maybe you guys have some ideas about this.

And yes I know this is not exactly Virtualmin connected but I am trying to get any help I can :slight_smile:

Thanks in advance!