There is a calendar event filter based on the field '_id', but this field is not on the layout 'BBCalendar'. You must add the field to this layout in order to search by it.
Could someone please point out how to fix this? I've tried all kind of combinations for zulu_filterValue and zulu_filterKey without any positive results. My main target is to get the calendar working at all, so not having a filter for a start is also a solution. My problem is that I can't just leave the two fields empty, otherwise I get the following error:
There is a calendar event filter based on the field 'null', but this field is not on the layout 'BBCalendar'. You must add the field to this layout in order to search by it.