Lovelace Dashboards: Cards won't load when editing

I’m editing my dashboard and playing around with some custom card types I’ve imported. When I go to edit a dashboard and add a new card, some won’t load at all.

I can’t seem to figure out what cards are trying to load here. Not all my custom cards I’ve downloaded from HACS appear have a GUI card - they can only be created manually which means I can’t narrow down which ones it is.

Any idea how to identify what cards these are?

Thanks!