Error from UE4 when importing and FBX with animation

gistfile1.txt

LoginId:5ef753783a46308f9ac1bb9f513b2399
EpicAccountId:c6786ebb091442f39718707d5abd9d64

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:/Users/build/Build/++UE4/Sync/Engine/Source/Runtime/Core/Public/Containers/Array.h] [Line: 614] Array index out of bounds: 0 from an array of size 0

FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x1087522f7 (filename not found) [in UE4Editor-Core.dylib]
FMacErrorOutputDevice::Serialize(char16_t const*, ELogVerbosity::Type, FName const&) Address = 0x1088b5ed0 (filename not found) [in UE4Editor-Core.dylib]
FOutputDevice::LogfImpl(char16_t const*, ...) Address = 0x1089b4ae9 (filename not found) [in UE4Editor-Core.dylib]
AssertFailedImplV(char const*, char const*, int, char16_t const*, __va_list_tag*) Address = 0x10893ad2d (filename not found) [in UE4Editor-Core.dylib]
FDebug::CheckVerifyFailedImpl(char const*, char const*, int, char16_t const*, ...) Address = 0x10893abb4 (filename not found) [in UE4Editor-Core.dylib]
SkeletalMeshBuilderHelperNS::FixFaceMaterial(USkeletalMesh*, TArray<SkeletalMeshImportData::FMaterial, TSizedDefaultAllocator<32> >&, TArray<SkeletalMeshImportData::FMeshFace, TSizedDefaultAllocator<32> >&) Address = 0x124ae7637 (filename not found) [in UE4Editor-MeshBuilder.dylib]
FSkeletalMeshBuilder::Build(USkeletalMesh*, int, bool) Address = 0x124ae52ec (filename not found) [in UE4Editor-MeshBuilder.dylib]
FMeshBuilderModule::BuildSkeletalMesh(USkeletalMesh*, int, bool) Address = 0x124ae4f19 (filename not found) [in UE4Editor-MeshBuilder.dylib]
UnFbx::FFbxImporter::ImportSkeletalMesh(UnFbx::FFbxImporter::FImportSkeletalMeshArgs&) Address = 0x11272e98f (filename not found) [in UE4Editor-UnrealEd.dylib]
UFbxFactory::FactoryCreateFile(UClass*, UObject*, FName, EObjectFlags, FString const&, char16_t const*, FFeedbackContext*, bool&) Address = 0x1126619ce (filename not found) [in UE4Editor-UnrealEd.dylib]
UFactory::ImportObject(UClass*, UObject*, FName, EObjectFlags, FString const&, char16_t const*, bool&) Address = 0x1125e730a (filename not found) [in UE4Editor-UnrealEd.dylib]
UAssetToolsImpl::ImportAssetsInternal(TArray<FString, TSizedDefaultAllocator<32> > const&, FString const&, TArray<TTuple<FString, FString>, TSizedDefaultAllocator<32> >*, FAssetImportParams const&) const Address = 0x126a2aaff (filename not found) [in UE4Editor-AssetTools.dylib]
UAssetToolsImpl::ImportAssets(TArray<FString, TSizedDefaultAllocator<32> > const&, FString const&, UFactory*, bool, TArray<TTuple<FString, FString>, TSizedDefaultAllocator<32> >*) const Address = 0x126a339f4 (filename not found) [in UE4Editor-AssetTools.dylib]
UAssetToolsImpl::ImportAssetsWithDialog(FString const&) Address = 0x126a26b59 (filename not found) [in UE4Editor-AssetTools.dylib]
non-virtual thunk to UAssetToolsImpl::ImportAssetsWithDialog(FString const&) Address = 0x126a26f42 (filename not found) [in UE4Editor-AssetTools.dylib]
SContentBrowser::ImportAsset(FString const&) Address = 0x1257eb5c3 (filename not found) [in UE4Editor-ContentBrowser.dylib]
TBaseSPMethodDelegateInstance<false, SContentBrowser, (ESPMode)0, TTypeWrapper<void> (FString const&)>::Execute(FString const&) const Address = 0x1258a024d (filename not found) [in UE4Editor-ContentBrowser.dylib]
TBaseSPMethodDelegateInstance<false, SContentBrowser, (ESPMode)0, void (FString const&)>::ExecuteIfSafe(FString const&) const Address = 0x1258a02d8 (filename not found) [in UE4Editor-ContentBrowser.dylib]
decltype(auto) UE4Tuple_Private::TTupleImpl<TIntegerSequence<unsigned int, 0u, 1u>, TBaseDelegate<void, FString const&>, FString>::ApplyAfter<void (* const&)(TBaseDelegate<void, FString const&>, FString)>(void (* const&)(TBaseDelegate<void, FString const&>, FString)) const Address = 0x125832a9e (filename not found) [in UE4Editor-ContentBrowser.dylib]
TBaseStaticDelegateInstance<void (), TBaseDelegate<void, FString const&>, FString>::ExecuteIfSafe() const Address = 0x1258327c4 (filename not found) [in UE4Editor-ContentBrowser.dylib]
SMenuEntryBlock::OnClicked(bool) Address = 0x10aaeb6d9 (filename not found) [in UE4Editor-Slate.dylib]
SMenuEntryBlock::OnMenuItemButtonClicked() Address = 0x10aadcea3 (filename not found) [in UE4Editor-Slate.dylib]
TBaseSPMethodDelegateInstance<false, SMenuEntryBlock, (ESPMode)0, FReply ()>::Execute() const Address = 0x10ab4a493 (filename not found) [in UE4Editor-Slate.dylib]
SButton::ExecuteOnClick() Address = 0x10ab8d080 (filename not found) [in UE4Editor-Slate.dylib]
SButton::OnMouseButtonUp(FGeometry const&, FPointerEvent const&) Address = 0x10aba670e (filename not found) [in UE4Editor-Slate.dylib]
SMenuEntryButton::OnMouseButtonUp(FGeometry const&, FPointerEvent const&) Address = 0x10ab4bcb8 (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::RoutePointerUpEvent(FWidgetPath const&, FPointerEvent const&) Address = 0x10a9de34e (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::ProcessMouseButtonUpEvent(FPointerEvent const&) Address = 0x10a99d948 (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::OnMouseUp(EMouseButtons::Type, FVector2D) Address = 0x10a9e73e2 (filename not found) [in UE4Editor-Slate.dylib]
FMacApplication::ProcessMouseUpEvent(FDeferredMacEvent const&, TSharedPtr<FMacWindow, (ESPMode)0>) Address = 0x10a9077ca (filename not found) [in UE4Editor-ApplicationCore.dylib]
FMacApplication::ProcessEvent(FDeferredMacEvent const&) Address = 0x10a900c88 (filename not found) [in UE4Editor-ApplicationCore.dylib]
FMacApplication::ProcessDeferredEvents(float) Address = 0x10a9009ef (filename not found) [in UE4Editor-ApplicationCore.dylib]
FSlateApplication::TickPlatform(float) Address = 0x10a9b513f (filename not found) [in UE4Editor-Slate.dylib]
FSlateApplication::Tick(ESlateTickType) Address = 0x10a9b4960 (filename not found) [in UE4Editor-Slate.dylib]
FEngineLoop::Tick() Address = 0x10838e4c8 (filename not found) [in UE4Editor]
GuardedMain(char16_t const*) Address = 0x10839873f (filename not found) [in UE4Editor]
-[UE4AppDelegate runGameThread:] Address = 0x1083b287f (filename not found) [in UE4Editor]
-[FCocoaGameThread main] Address = 0x1088b50d1 (filename not found) [in UE4Editor-Core.dylib]
Unknown() Address = 0x7fff3bb64788 (filename not found) [in Foundation]
_pthread_start Address = 0x7fff70d29e65 (filename not found) [in libsystem_pthread.dylib]
thread_start Address = 0x7fff70d2583b (filename not found) [in libsystem_pthread.dylib]