See who has RSVPed feature takes me to an unstyled page

Hi for some reason when viewing an event on the front end the See who has RSVPed button takes me to an unstyled page.

Event: http://www.ebn.uk.com/events/2015/06/london-networking-group-0/

RSVPed page: http://www.ebn.uk.com/wp-admin/admin-ajax.php?action=eab_list_rsvps&pid=3922

I was just wondering if this is the expected behaviour for this feature?