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I am trying to upgrade my document macos app with swiftui.. When starting Xcode creates the templates and everything works as expected as long as only one document is open. When 2 documents are open, and the app tries to do a @FETCH in the second document. It crashs...Multiple NSEntityDescriptions claim the NSManagedObject subclass 'XXXXXXX' so +entity is unable to disambiguateI assume that the are two managedobjectcontexts in the environment and the app can not identify which one. Is it so? Has anyone the same problem? I would apreciate any idea on how to fix this? My apologies for asking it. I am relatively new to swiftui...