factory game

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000011

FactoryGameSteam_CoreUObject_Win64_Shipping!FObjectPtr::IsA() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\CoreUObject\Private\UObject\ObjectPtr.cpp:85]
FactoryGameSteam_CoreUObject_Win64_Shipping!FClassProperty::Identical() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\CoreUObject\Private\UObject\PropertyClass.cpp:193]
FactoryGameSteam_Engine_Win64_Shipping!UBlueprintGeneratedClass::BuildCustomPropertyListForPostConstruction() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp:904]
FactoryGameSteam_Engine_Win64_Shipping!UBlueprintGeneratedClass::UpdateCustomPropertyListForPostConstruction() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp:1022]
FactoryGameSteam_Engine_Win64_Shipping!UBlueprintGeneratedClass::SerializeDefaultObject() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp:570]
FactoryGameSteam_CoreUObject_Win64_Shipping!FAsyncPackage2::EventDrivenSerializeExport() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:6371]
FactoryGameSteam_CoreUObject_Win64_Shipping!FAsyncPackage2::Event_ProcessExportBundle() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:5804]
FactoryGameSteam_CoreUObject_Win64_Shipping!FEventLoadNode2::Execute() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:4320]
FactoryGameSteam_CoreUObject_Win64_Shipping!FAsyncLoadEventQueue2::ExecuteSyncLoadEvents() [C:\BuildAgent\work\b731a33f2a691e17\UE4\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading2.cpp:4508]
FactoryGameSteam_CoreUObject_Win64_Shipping!FAsyncLoadingThread2::Run()