[CrashReport] CastChecked<UAnimBlueprint,UBlueprint>()

Fatal error: [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\Templates\Casts.cpp] [Line: 10] Cast of nullptr to AnimBlueprint failed

UE4Editor_CoreUObject!CastLogError() [casts.cpp:11]
UE4Editor_AnimGraph!CastChecked<UAnimBlueprint,UBlueprint>() [casts.h:211]
UE4Editor_AnimGraph!UAnimationTransitionSchema::GetGraphDisplayInformation() [animationtransitionschema.cpp:47]
UE4Editor_Kismet!FLocalKismetCallbacks::GetGraphDisplayName() [blueprinteditortabfactories.h:43]
UE4Editor_Kismet!UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int,0>,UEdGraph * __ptr64>::ApplyAfter<FText() [tuple.h:422]
UE4Editor_Kismet!TBaseStaticDelegateInstance<FText __cdecl() [delegateinstancesimpl.h:958]
UE4Editor_Slate!TBaseDelegate<FText>::Execute() [delegatesignatureimpl.inl:537]
UE4Editor_Slate!TAttribute<FText>::Get() [attribute.h:137]
UE4Editor_Slate!SDockTab::GetTabLabel() [sdocktab.cpp:688]
UE4Editor_UnrealEd!FUnrealEdMisc::OnUserActivityTabChanged() [unrealedmisc.cpp:1116]
UE4Editor_UnrealEd!FUnrealEdMisc::OnTabForegrounded() [unrealedmisc.cpp:1109]
UE4Editor_UnrealEd!TBaseRawMethodDelegateInstance<0,FUnrealEdMisc,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:556]
UE4Editor_UnrealEd!TBaseRawMethodDelegateInstance<0,FUnrealEdMisc,void __cdecl() [delegateinstancesimpl.h:646]
UE4Editor_Slate!TBaseMulticastDelegate<void,TSharedPtr<SDockTab,0>,TSharedPtr<SDockTab,0> >::Broadcast() [delegatesignatureimpl.inl:937]
UE4Editor_Slate!FGlobalTabmanager::OnTabForegrounded() [tabmanager.cpp:2038]
UE4Editor_Slate!SDockingTabWell::BringTabToFront() [sdockingtabwell.cpp:474]
UE4Editor_Slate!SDockingTabWell::RemoveAndDestroyTab() [sdockingtabwell.cpp:539]
UE4Editor_Slate!SDockTab::RemoveTabFromParent() [sdocktab.cpp:330]
UE4Editor_Slate!SDockTab::RequestCloseTab() [sdocktab.cpp:766]
UE4Editor_Kismet!FTabInfo::JumpToNearestValidHistoryData() [workflowtabmanager.cpp:143]
UE4Editor_Kismet!FDocumentTracker::CleanInvalidTabs() [workflowtabmanager.cpp:646]
UE4Editor_Kismet!FBlueprintEditor::RefreshEditors() [blueprinteditor.cpp:721]
UE4Editor_Kismet!FBlueprintEditor::OnBlueprintChangedImpl() [blueprinteditor.cpp:3194]
UE4Editor_AnimationBlueprintEditor!FAnimationBlueprintEditor::OnBlueprintChangedImpl() [animationblueprinteditor.cpp:1306]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,void __cdecl() [delegateinstancesimpl.h:434]
UE4Editor_Engine!TBaseMulticastDelegate<void,UBlueprint * __ptr64>::Broadcast() [delegatesignatureimpl.inl:937]
UE4Editor_UnrealEd!FBlueprintEditorUtils::MarkBlueprintAsStructurallyModified() [blueprinteditorutils.cpp:2083]
UE4Editor_UnrealEd!FBlueprintEditorUtils::RemoveGraph() [blueprinteditorutils.cpp:2516]
UE4Editor_AnimGraph!UAnimStateTransitionNode::DestroyNode() [animstatetransitionnode.cpp:496]
UE4Editor_Engine!UEdGraphSchema::BreakPinLinks() [edgraphschema.cpp:567]
UE4Editor_AnimGraph!UAnimationStateMachineSchema::BreakPinLinks() [animationstatemachineschema.cpp:461]
UE4Editor_Engine!UEdGraphSchema::BreakNodeLinks() [edgraphschema.cpp:524]
UE4Editor_AnimGraph!UAnimationStateMachineSchema::BreakNodeLinks() [animationstatemachineschema.cpp:452]
UE4Editor_UnrealEd!FBlueprintEditorUtils::RemoveNode() [blueprinteditorutils.cpp:2639]
UE4Editor_Kismet!FBlueprintEditor::DeleteSelectedNodes() [blueprinteditor.cpp:5479]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,TTypeWrapper<void> __cdecl() [delegateinstancesimpl.h:327]
UE4Editor_Kismet!TBaseSPMethodDelegateInstance<0,FBlueprintEditor,0,void __cdecl() [delegateinstancesimpl.h:434]
UE4Editor_Slate!FUICommandList::ConditionalProcessCommandBindings() [uicommandlist.cpp:216]
UE4Editor_Slate!FUICommandList::ProcessCommandBindings() [uicommandlist.cpp:160]
UE4Editor_GraphEditor!SGraphEditorImpl::OnKeyDown() [sgrapheditorimpl.cpp:78]
UE4Editor_Slate!<lambda_2afcd964c763e269e2d1a63f3a72f846>::operator() [slateapplication.cpp:4630]
UE4Editor_Slate!FEventRouter::Route<FReply,FEventRouter::FBubblePolicy,FKeyEvent,<lambda_2afcd964c763e269e2d1a63f3a72f846> >() [slateapplication.cpp:239]
UE4Editor_Slate!FEventRouter::RouteAlongFocusPath<FEventRouter::FBubblePolicy,<lambda_2afcd964c763e269e2d1a63f3a72f846>,FKeyEvent>() [slateapplication.cpp:221]
UE4Editor_Slate!FSlateApplication::ProcessKeyDownEvent() [slateapplication.cpp:4628]
UE4Editor_Slate!FSlateApplication::OnKeyDown() [slateapplication.cpp:4541]
UE4Editor_Core!FWindowsApplication::ProcessDeferredMessage() [windowsapplication.cpp:1539]
UE4Editor_Core!FWindowsApplication::DeferMessage() [windowsapplication.cpp:2127]
UE4Editor_Core!FWindowsApplication::ProcessMessage() [windowsapplication.cpp:867]
UE4Editor_Core!FWindowsApplication::AppWndProc() [windowsapplication.cpp:714]
user32!UserCallWinProcCheckWow()
user32!DispatchMessageWorker()
UE4Editor_Core!FWindowsPlatformMisc::PumpMessages() [windowsplatformmisc.cpp:1009]
UE4Editor!FEngineLoop::Tick() [launchengineloop.cpp:3058]
UE4Editor!GuardedMain() [launch.cpp:166]
UE4Editor!GuardedMainWrapper() [launchwindows.cpp:134]
UE4Editor!WinMain() [launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [exe_common.inl:253]
kernel32!BaseThreadInitThunk()
ntdll!RtlUserThreadStart()