NullReferenceException: 並未將物件參考設定為物件的執行個體。
StackTrace:
   於 Quicker.View.Controls.WebView2Wrapper.J4Za3ROiPtx(Object  , RoutedEventArgs  )
   於 System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   於 System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   於 System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
   於 System.Windows.BroadcastEventHelper.BroadcastUnloadedEvent(Object root)
   於 MS.Internal.LoadedOrUnloadedOperation.DoWork()
   於 System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
   於 System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   於 System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   於 System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   於 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   於 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)