RSRP-293117: Object reference not set to an instance of an object.

  at JetBrains.ProjectModel.ProjectItemBase.<CreateCachedPersistentId>b__0(ProjectItemBase x) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Projects\src\model2\ProjectImplementation\ProjectItemBase.cs:line 44
     at JetBrains.ProjectModel.Impl.CachedProjectItemValue`2.GetValue() in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Projects\src\impl\CachedProjectItemValue.cs:line 37
     at JetBrains.ProjectModel.ProjectItemBase.GetPersistentID() in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Projects\src\model2\ProjectImplementation\ProjectItemBase.cs:line 188
     at JetBrains.ProjectModel.ProjectImpl.GetChangeDelta(ProjectModelChangeType changeType) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Projects\src\model2\ProjectImplementation\ProjectImpl.cs:line 393
     at JetBrains.ProjectModel.ProjectItemBase.DoMove(IProjectFolder newParentItem) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Projects\src\model2\ProjectImplementation\ProjectItemBase.cs:line 292
     at JetBrains.VsIntegration.ProjectModel.ProjectModelSynchronizer.HandleChangeProjectParent(IVsHierarchy hierarchy) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\VisualStudio\Core\src\ProjectModel\ProjectModelSynchronizer.cs:line 1614
     at JetBrains.VsIntegration.ProjectModel.VSSolutionManager.<>c__DisplayClass17.<OnAfterChangeProjectParent>b__16() in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\VisualStudio\Core\src\ProjectModel\VSSolutionManager.cs:line 415
     at JetBrains.Util.Concurrency.UnguardedCallbackMerger.<>c__DisplayClass3.<ExecuteOrQueueOrMerge>b__0() in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Util\src\Concurrency\UnguardedCallbackMerger.cs:line 139
     at JetBrains.Threading.ReentrancyGuard.Execute(String name, Action action) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Util\src\Concurrency\ReentrancyGuard.cs:line 266

  at JetBrains.Threading.ReentrancyGuard.TryExecute(String name, Action action) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Util\src\Concurrency\ReentrancyGuard.cs:line 415
     at JetBrains.Threading.ReentrancyGuardEx.ExecuteOrQueue(ReentrancyGuard thіs, Lifetime lifetime, String name, Action F) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Util\src\Concurrency\ReentrancyGuardEx.cs:line 64
     at JetBrains.Util.Concurrency.UnguardedCallbackMerger.ExecuteOrQueueOrMerge(Lifetime lifetimeQueue, String name, Action F) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\Util\src\Concurrency\UnguardedCallbackMerger.cs:line 136
     at JetBrains.VsIntegration.ProjectModel.VSSolutionManager.OnAfterChangeProjectParent(IVsHierarchy pHierarchy) in c:\BuildAgent\work\3355b838ddaf4e5c\Platform\src\VisualStudio\Core\src\ProjectModel\VSSolutionManager.cs:line 408
     at Microsoft.VisualStudio.Shell.Interop.IVsHierarchyDropDataTarget.Drop(IDataObject pDataObject, UInt32 grfKeyState, UInt32 itemid, UInt32& pdwEffect)
     at Microsoft.VisualStudio.Labs.HierarchyItem.OnDrop(DirectionalDropArea area, DragEventArgs e)
     at Microsoft.VisualStudio.Labs.PivotTreeViewItem.<>c__DisplayClassa.<OnDrop>b__9(DirectionalDropArea area, IDragDropTargetPattern target)
     at Microsoft.VisualStudio.Labs.PivotTreeViewItem.HandleDragEvent(DragEventArgs e, Action`2 handler)
     at Microsoft.VisualStudio.Labs.PivotTreeViewItem.OnDrop(DragEventArgs e)
     at System.Windows.UIElement.OnDropThunk(Object sender, DragEventArgs e)
     at System.Windows.DragEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
     at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
     at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
     at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
     at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
     at System.Windows.ContentElement.RaiseEvent(RoutedEventArgs e)
     at System.Windows.OleDropTarget.RaiseDragEvent(RoutedEvent dragEvent, Int32 dragDropKeyStates, Int32& effects, DependencyObject target, Point targetPoint)
     at System.Windows.OleDropTarget.MS.Win32.UnsafeNativeMethods.IOleDropTarget.OleDrop(Object data, Int32 dragDropKeyStates, Int64 point, Int32& effects)
     at Microsoft.VisualStudio.Labs.HierarchyItem.HierarchyDragDropController.DoDragDrop(IDataObject dataObject, IDropSource dropSource, UInt32 allowedEffects, UInt32& effect)
     at Microsoft.VisualStudio.Labs.HierarchyItem.HierarchyDragDropController.DoDragDrop(IEnumerable`1 items)
     at Microsoft.VisualStudio.Labs.DragDropSourceController.DoDragDrop(IEnumerable`1 items, Func`2 getController)
     at Microsoft.VisualStudio.Labs.DragDropSourceController.DoDragDrop(IEnumerable`1 items)
     at Microsoft.VisualStudio.Labs.PivotTreeView.OnDragStarted(Object sender, ScreenDragEventArgs args)
     at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
     at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
     at System.Delegate.DynamicInvokeImpl(Object[] args)
     at System.Windows.RoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
     at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
     at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
     at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
     at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
     at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
     at Microsoft.VisualStudio.Labs.PivotTreeViewItem.OnDragStarted(Point point)
     at Microsoft.VisualStudio.Labs.DraggableListBoxItem.OnMouseMove(MouseEventArgs e)
     at System.Windows.UIElement.OnMouseMoveThunk(Object sender, MouseEventArgs e)
     at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
     at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
     at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
     at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
     at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
     at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
     at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
     at System.Windows.Input.InputManager.ProcessStagingArea()
     at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
     at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
     at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
     at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
     at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
     at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
     at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
     at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
     at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
     at System.Windows.Threading.DispatcherOperation.InvokeImpl()
     at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
     at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
     at System.Windows.Threading.DispatcherOperation.Invoke()
     at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherOperation operation, CancellationToken cancellationToken, TimeSpan timeout)
     at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
     at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)