I have this happening with one of the 20 databases, why, how can this be fixed? who knows?
What happens if you delete that relationship and create it again? I believe this relationship is between this collection and the events collection? The first property in the events collection is not empty right?
If not works the best would be Submitting a support ticket.
All you gotta do is switch the first parameter in the colllection to the “name” parameter by dragging it to the top of the parameters list. That section displays the first parameter of a collection.
brilliant and simple