at Xamarin.Forms.Platform.MacOS.NativeToolbarTracker.UpdateTitle () [0x00125] in :0 at Xamarin.Forms.Platform.MacOS.NativeToolbarTracker.UpdateToolBar () [0x0011b] in :0 at Xamarin.Forms.Platform.MacOS.NativeToolbarTracker.set_Navigation (Xamarin.Forms.NavigationPage value) [0x0008d] in :0 at Xamarin.Forms.Platform.MacOS.NavigationPageRenderer.Init () [0x00025] in :0 at Xamarin.Forms.Platform.MacOS.NavigationPageRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x0000e] in :0 at Xamarin.Forms.Platform.MacOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x00014] in :0 at Xamarin.Forms.Platform.MacOS.Platform.AddChild (Xamarin.Forms.VisualElement view) [0x00027] in :0 at Xamarin.Forms.Platform.MacOS.Platform.WillAppear () [0x0001c] in :0 at Xamarin.Forms.Platform.MacOS.PlatformRenderer.ViewWillAppear () [0x00006] in :0 at (wrapper managed-to-native) ObjCRuntime.Messaging.void_objc_msgSend_IntPtr(intptr,intptr,intptr) at AppKit.NSWindow.set_ContentViewController (AppKit.NSViewController value) [0x00025] in /Library/Frameworks/Xamarin.Mac.framework/Versions/5.0.0.0/src/Xamarin.Mac/AppKit/NSWindow.g.cs:8937 at Xamarin.Forms.Platform.MacOS.FormsApplicationDelegate.UpdateMainPage () [0x00034] in :0 at Xamarin.Forms.Platform.MacOS.FormsApplicationDelegate.SetMainPage () [0x00000] in :0 at Xamarin.Forms.Platform.MacOS.FormsApplicationDelegate.DidFinishLaunching (Foundation.NSNotification notification) [0x00041] in :0 at MyProject.AppDelegate.DidFinishLaunching (Foundation.NSNotification notification) [0x0005d] in /Users/hashem/Downloads/MyProject.macOS/MyProject.macOS/AppDelegate.cs:44 at (wrapper managed-to-native) AppKit.NSApplication.NSApplicationMain(int,string[]) at AppKit.NSApplication.Main (System.String[] args) [0x00040] in /Library/Frameworks/Xamarin.Mac.framework/Versions/5.0.0.0/src/Xamarin.Mac/AppKit/NSApplication.cs:100 at MyProject.MainClass.Main (System.String[] args) [0x00017] in /Users/hashem/Downloads/MyProject.macOS/MyProject.macOS/Main.cs:11