For me, with the web dashboard, I had to remove "content_type" from the list of fields in the primary query. After poking around the data model, it doesn't appear to be a field in there anymore (the model itself claims it's there, but searching the data in the data model shows no field by that name).
(Since I don't know if it's coming back, I just copied and commented out the original query, then pasted the modified version afterward)
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