Crash when trying to save game to slot after the save game calls an event dispatcher

UE4Editor_Core!FArchive::operator<<() archive.cpp:259 
UE4Editor_CoreUObject!operator<<() array.h:1123 
UE4Editor_CoreUObject!UMulticastDelegateProperty::SerializeItem() propertymulticastdelegate.cpp:104 
UE4Editor_CoreUObject!FPropertyTag::SerializeTaggedProperty() propertytag.cpp:147 
UE4Editor_CoreUObject!UStruct::SerializeTaggedProperties() class.cpp:1163 
UE4Editor_CoreUObject!UObject::SerializeScriptProperties() obj.cpp:1130 
UE4Editor_CoreUObject!UObject::Serialize() obj.cpp:1064 
UE4Editor_Engine!UGameplayStatics::SaveGameToSlot() gameplaystatics.cpp:1551 
UE4Editor_Engine!UGameplayStatics::execSaveGameToSlot() gameplaystatics.h:32 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4474 
UE4Editor_CoreUObject!UObject::CallFunction() scriptcore.cpp:700 
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() scriptcore.cpp:2139 
UE4Editor_CoreUObject!UObject::execLetBool() scriptcore.cpp:2054 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:925 
UE4Editor_CoreUObject!UObject::CallFunction() scriptcore.cpp:824 
UE4Editor_CoreUObject!UObject::execVirtualFunction() scriptcore.cpp:2245 
UE4Editor_CoreUObject!UObject::ProcessInternal() scriptcore.cpp:925 
UE4Editor_CoreUObject!UFunction::Invoke() class.cpp:4474 
UE4Editor_CoreUObject!UObject::ProcessEvent() scriptcore.cpp:1308 
UE4Editor_Engine!AActor::ProcessEvent() actor.cpp:649 
UE4Editor_Engine!AActor::BeginPlay() actor.cpp:3048 
UE4Editor_Engine!AWorldSettings::NotifyBeginPlay() worldsettings.cpp:175 
UE4Editor_Engine!AGameStateBase::HandleBeginPlay() gamestatebase.cpp:177 
UE4Editor_Engine!UWorld::BeginPlay() world.cpp:3358 
UE4Editor_Engine!UGameInstance::StartPIEGameInstance() gameinstance.cpp:282 
UE4Editor_UnrealEd!UEditorEngine::CreatePIEGameInstance() playlevel.cpp:3358 
UE4Editor_UnrealEd!UEditorEngine::PlayInEditor() playlevel.cpp:2462 
UE4Editor_UnrealEd!UEditorEngine::StartQueuedPlayMapRequest() playlevel.cpp:1160 
UE4Editor_UnrealEd!UEditorEngine::Tick() editorengine.cpp:1320 
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() unrealedengine.cpp:371 
UE4Editor!FEngineLoop::Tick() launchengineloop.cpp:2859 
UE4Editor!GuardedMain() launch.cpp:152 
UE4Editor!GuardedMainWrapper() launchwindows.cpp:126 
UE4Editor!WinMain() launchwindows.cpp:202 
UE4Editor!__scrt_common_main_seh() exe_common.inl:264 
kernel32!<Unknown> 
ntdll!<Unknown>