It's curious that Apple says a launchScreen.storyboard is required but no longer includes one in Xcode 12's App project template for SwiftUI.

I received the same error. In my case, closing and reopening the project fixed the problem.

After selecting Xcode's menu File->New->File, select View in the User Interface group. View will create a .xib file. (This applies to iOS, MacOS and TVOS but not WatchOS.)

Suggested by an Apple Frameworks engineer: xcrun simctl --set previews delete all My Previews folder was 110GB and went to 6GB. Everything seems to be working well.

This works as well. let _ = print()

I'm having the same problem. Is this only with Intel computers?

Got it working. I wrapped my SwiftUI View to be printed(and displayed) in a local function like this: private func generateView() -> some View { VStack { .... } } Then I created a func to save the some View as a PDF in the document directory using ImageRenderer. The func also returns the PDF's URL which was created using URL.documentsDirectory.appending(path:) Then I created another func using UIPrintInteractionController and the PDF's URL to present the print controller for the saved pdf.