Hi all, I am trying to persist some data using SwiftData, I have two models: Page Line The models are connected by a relationship like this: import SwiftData @Model final class Page { var id: UUID var created_at: Date var title: String var pinned: Bool @Relationship(deleteRule: .cascade) var lines: [Line] = [] init(id: UUID = UUID(), created_at: Date = .now, title: String = "", pinned: Bool = false) { self.id = id self.created_at = created_at self.title = title self.pinned = pinned self.lines = lines } } import SwiftData @Model final class Line: Identifiable { var id: UUID var input: String var output: String var keyword: Bool @Relationship(inverse: \Page.lines) var page: Page init(id: UUID = UUID(), input: String = "", output: String = "", keyword: Bool = false, page: Page) { self.id = id self.input = input self.output = output self.keyword = keyword self.page = page } } I attached the modelCOntainer to the Window WindowGroup { ContentView() } .modelContainer(for: Page.self) And in my ContentView I am able to query and I get an empty array: @Query(sort: [SortDescriptor(\Page.created_at, order: .reverse)], animation: .spring) var pages: [Page] However, when I try to insert a page or a line my app crashes: func addSample() { let page = Page() context.insert(page) } CrashReporter Key: 8570AF55-7ED0-39AC-F6D4-0322CC485E65 Hardware Model: Mac14,9 Process: Equals [47925] Path: /Users/USER/Library/Developer/Xcode/UserData/Previews/Simulator Devices/2652B05A-811D-4E76-8C11-833748962497/data/Containers/Bundle/Application/23A01A2A-1FB4-4A4F-A542-74637D044F4C/Equals.app/Equals Identifier: com.jonathangiardino.Equals Version: 1.0 (1) Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd_sim [43814] Coalition: com.apple.CoreSimulator.SimDevice.2652B05A-811D-4E76-8C11-833748962497 [90202] Responsible Process: SimulatorTrampoline [64001] Date/Time: 2023-11-04 17:32:37.5567 +0100 Launch Time: 2023-11-04 17:30:42.6200 +0100 OS Version: macOS 13.5 (22G74) Release Type: User Report Version: 104 Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000001, 0x000000018c985be8 Termination Reason: SIGNAL 5 Trace/BPT trap: 5 Terminating Process: exc handler [47925] Triggered by Thread: 0 Kernel Triage: VM - (arg = 0x0) pmap_enter retried due to resource shortage VM - (arg = 0x0) pmap_enter retried due to resource shortage VM - (arg = 0x0) pmap_enter retried due to resource shortage Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libswiftCore.dylib 0x18c985be8 _assertionFailure(_:_:file:line:flags:) + 248 1 SwiftData 0x1a89d5724 specialized static ModelContainer.currentContainer(_:) + 692 2 SwiftData 0x1a8a4f5d0 _DefaultBackingData.init(for:) + 248 3 SwiftData 0x1a8a5419c _DefaultBackingData.__allocating_init(for:) + 52 4 SwiftData 0x1a8a11438 static PersistentModel.createBackingData<A>() + 72 5 Equals 0x1023a6e84 Page.init(id:created_at:title:pinned:) + 488 (@__swiftmacro_6Equals4Page5ModelfMm_.swift:2) 6 Equals 0x1023a6c8c Page.__allocating_init(id:created_at:title:pinned:) + 92 7 ContentView.1.preview-thunk.dylib 0x10d21181c ContentView.__preview__addSampleLine() + 256 (ContentView.swift:350) 8 ContentView.1.preview-thunk.dylib 0x10d214b6c ContentView.__preview__addNewLine() + 96 (ContentView.swift:246) 9 ContentView.1.preview-thunk.dylib 0x10d21a5b8 closure #3 in closure #1 in closure #1 in ContentView.__preview__body.getter + 36 (ContentView.swift:111) Can anyone give me a hnt of what I am doing wrong???