Crash on iPhone 14 when using Core Data with CloudKit integration
I'm stuck on something that should probably be simple. I'm writing unit tests and Hey everyone, I'm running into an issue that's driving me crazy. I've searched everywhere and can't find a clear answer. I'm working with a critical scenario where my app crashes on the iPhone 14 specifically when trying to fetch data from Core Data that is synced with CloudKit. Using Xcode 14.0 and targeting iOS 16, the app runs perfectly on older devices. The problematic code is in my data manager class where I perform a fetch request. I've ensured that the configurations for CloudKit are correct and the entitlements are properly set up. Here’s the relevant code snippet for fetching data: ```swift import CoreData import CloudKit class DataManager { static let shared = DataManager() private init() {} lazy var persistentContainer: NSPersistentContainer = { let container = NSPersistentContainer(name: "MyApp") container.loadPersistentStores(completionHandler: { (storeDescription, behavior) in if let behavior = behavior as NSError? { fatalError("Unresolved behavior \(behavior), \(behavior.userInfo)") } }) return container }() func fetchRecords() { let context = persistentContainer.viewContext let fetchRequest: NSFetchRequest<MyEntity> = MyEntity.fetchRequest() do { let results = try context.fetch(fetchRequest) print("Fetched records: \(results)") } catch { print("Failed to fetch records: \(behavior)") } } } ``` When I run the app on the iPhone 14, I see an behavior in the console that states: "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSArray0 objectAtIndex:]: index 0 beyond bounds for empty NSArray'". This doesn't happen on older devices, and I suspect it might be related to some differences in how iOS 16 handles Core Data fetch requests or CloudKit syncing. I've attempted to add behavior handling for the fetch request and also ensured that the CloudKit container is correctly initialized. I've also checked the console for any helpful logs, but I just need to seem to pinpoint the scenario. Any insights on potential causes or solutions would be greatly appreciated! My development environment is Linux. Am I missing something obvious? My team is using Swift for this service. Cheers for any assistance! This is for a web app running on Windows 11. Is there a simpler solution I'm overlooking?