[Ubuntu 20.04.3] Can't Provision a Domain Controller

To test the application i've setup a Ubuntu 20.04.3 server fresh install but cannot Provision a domain. When i click "Provision" the loading icon spins but nothing happens, just returns to the main screen with the "No AD DC Found" message. image I've followed the tutorial available at https://wiki.samba.org/index.php/GSOC_cockpit_samba_ad_dc