If we create an event for an invite-only group, the event takes on the same parameters i.e also by-invite only.

When a member of the group attempts to book for the event, they get an empty pop-up message and when they refresh the page, the booking has not been processed.
This only applies to by-invite events

I assume that the popup should contain some message saying that you cannot book without an invitation or a request invitation button.

How do we fix this broken popup?