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App runs fine, but SwiftUI preview complains “executeFetchRequest:error: A fetch request must have an entity..”

Forums > SwiftUI
@JetForMe  HWS+

I'm migrating my app from Obj-C to Swift. It uses Core Data, and most of the entities are implemented in Obj-C. I just took a stab at converting one of my views to SwiftUI, and it runs correctly, but Preview crashes with

“executeFetchRequest:error: A fetch request must have an entity..”

I've tried declaring the fetch request both with and without the entity: argument:

@FetchRequest(entity: NewsItem.entity(), sortDescriptors: [])   var newsItems : FetchedResults<NewsItem>

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