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Reply to One or more models in this application are using transformable properties with transformer names that are either unset, or set to NSKeyedUnarchiveFromDataTransformerName.
I think that the error is telling you which entity and property is causing the error:CoreData: warning: Property 'notificationIdentifiers' on Entity 'Affirmation' is using nil or an insecure NSValueTransformer. Please switch to using "NSSecureUnarchiveFromData" or a subclass of NSSecureUnarchiveFromDataTransformer instead
Apr ’20