Eccezione non gestita: System.NullReferenceException: Riferimento a un oggetto non impostato su un'istanza di oggetto.
   in LiveCharts.Wpf.Series.Erase(Boolean removeFromView) in c:\Users\btord\Documents\Projects\LiveCharts\WpfView\Series.cs:riga 468
   in LiveCharts.Wpf.Charts.Base.Chart.OnSeriesChanged(DependencyObject o, DependencyPropertyChangedEventArgs e) in c:\Users\btord\Documents\Projects\LiveCharts\WpfView\Charts\Base\Chart.cs:riga 169
   in System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   in System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   in System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   in System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   in System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)
   in System.Windows.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)
   in System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
   in System.Windows.Data.BindingExpression.ScheduleTransfer(Boolean isASubPropertyChange)
   in MS.Internal.Data.ClrBindingWorker.NewValueAvailable(Boolean dependencySourcesChanged, Boolean initialValue, Boolean isASubPropertyChange)
   in MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
   in MS.Internal.Data.ClrBindingWorker.OnSourcePropertyChanged(Object o, String propName)
   in MS.Internal.Data.PropertyPathWorker.OnPropertyChanged(Object sender, PropertyChangedEventArgs e)
   in System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
   in System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged(Object sender, PropertyChangedEventArgs args)
   in MyApp.MVVM.ViewModels.ViewModel.OnPropertyChanged(String propertyName) in A:\Utenti\john\Windows_10\Documenti\Visual Studio 2017\Projects\MyApp\MyApp\MVVM\ViewModels\ViewModel.cs:riga 29
   in MyApp.MVVM.ViewModels.MyApp.set_AnalysisController(AnalysisController value) in A:\Utenti\john\Windows_10\Documenti\Visual Studio 2017\Projects\MyApp\MyApp\MVVM\ViewModels\MyApp.cs:riga 146
   in MyApp.Business.Utility.GeneralUtility.ClearGridAndFilters() in A:\Utenti\john\Windows_10\Documenti\Visual Studio 2017\Projects\MyApp\MyApp\Business\Utility\GeneralUtility.cs:riga 34
   in MyApp.Business.Controllers.CountryController.RemoveDeselectedCountry(String groupName) in A:\Utenti\john\Windows_10\Documenti\Visual Studio 2017\Projects\MyApp\MyApp\Business\Controllers\CountryController.cs:riga 48
   in MyApp.Resources.Controls.CountriesMenu.Countries_Unchecked(Object sender, RoutedEventArgs e) in A:\Utenti\john\Windows_10\Documenti\Visual Studio 2017\Projects\MyApp\MyApp\Resources\Controls\CountriesMenu.xaml.cs:riga 49
   in System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   in System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   in System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   in System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
   in System.Windows.Controls.Primitives.ToggleButton.OnUnchecked(RoutedEventArgs e)
   in System.Windows.Controls.Primitives.ToggleButton.OnIsCheckedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   in System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   in System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   in System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   in System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   in System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   in System.Windows.DependencyObject.SetCurrentValueInternal(DependencyProperty dp, Object value)
   in System.Windows.Controls.Primitives.ToggleButton.OnToggle()
   in System.Windows.Controls.Primitives.ToggleButton.OnClick()
   in System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
   in System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
   in System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   in System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   in System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   in System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   in System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   in System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
   in System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   in System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   in System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   in System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   in System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   in System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   in System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   in System.Windows.Input.InputManager.ProcessStagingArea()
   in System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   in System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   in System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   in System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   in System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   in MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   in MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   in System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   in System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   in System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   in MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   in MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   in System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   in System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   in System.Windows.Application.RunDispatcher(Object ignore)
   in System.Windows.Application.RunInternal(Window window)
   in System.Windows.Application.Run(Window window)
   in System.Windows.Application.Run()
   in SoccerForecast.App.Main()