I'm having difficulty understanding this crash report from AppCenter. IT comes from my Xamarin.Forms app on iOS. I understand that the error is in the function AWS_SNS_Utils.RegisterDevice. However, I cannot understand what line is causing this? What does the d__7 mean? What does MoveNext mean?
AWS_SNS_Utils+d__7.MoveNext ()
System.NullReferenceException: Object reference not set to an instance of an object
AWS_SNS_Utils+d__7.MoveNext ()
TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task)
TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task)
TaskAwaiter.GetResult ()
AppDelegate+d__1.MoveNext ()
AsyncMethodBuilderCore+<>c.b__6_0 (System.Object state)
UIKitSynchronizationContext+<>c__DisplayClass1_0.b__0 ()
NSAsyncActionDispatcher.Apply ()
(wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr)
UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName)
Application.Main (System.String[] args)