------------------------------
16:07:50 (FATAL): | .. |Unhandled exception: System.InvalidOperationException: .    5423600360    ""
   . 0000000101   
(   .  !)
    SKBKontur.KZ.Core.Pvso.FssBenefitRegistry.GetAndCheckEnterprise(Int32 enterpriseId, String benefitRegNumFss)
    SKBKontur.KZ.Core.Pvso.FssBenefitRegistry.UpdateBenefit(IFssBenefit fssBenefit, Int32 enterpriseId)
    SKBKontur.KZ.Forms.Pvso.FssBenefitEditorVm`1.<Save>b__64_0()
    CSharpFunctionalExtensions.ResultExtensions.OnSuccess(Result result, Func`1 func)
    SKBKontur.KZ.Forms.Pvso.FssBenefitEditorVm`1.Save()
    SKBKontur.KZ.Forms.GenericWindowBehavior.Save(Window wnd)
    SKBKontur.KZ.Forms.GenericWindowBehavior.TrySave(Window wnd)
    SKBKontur.KZ.Forms.GenericWindowBehavior.SaveAndClose_Executed(Object sender, ExecutedRoutedEventArgs e)
    System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
    System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)
    System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
    System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
    System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
    System.Windows.UIElement.OnExecutedThunk(Object sender, ExecutedRoutedEventArgs e)
    System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target)
    System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
    System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
    System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
    System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
    System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
    System.Windows.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
    System.Windows.Input.RoutedCommand.ExecuteCore(Object parameter, IInputElement target, Boolean userInitiated)
    MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
    System.Windows.Controls.Primitives.ButtonBase.OnClick()
    System.Windows.Controls.Button.OnClick()
    System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
    System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
    System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
    System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
    System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
    System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
    System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
    System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
    System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
    System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
    System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
    System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
    System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
    System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
    System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
    System.Windows.Input.InputManager.ProcessStagingArea()
    System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
    System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
    System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
    System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
    System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
    MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
    MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
    System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
    System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler) 
