Crash When server traveling from one level and then back again after calling a multiclass event (using Play as Listen Server)

Fatal error: [File:D:\Build\++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\Engine\Private\BlueprintGeneratedClass.cpp] [Line: 196] UBlueprintGeneratedClass::GetAuthoritativeClass: ClassGeneratedBy is null. class '/Game/Map1.Map1_C'

UE4Editor_Core!FDebug::AssertFailed() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:419]
UE4Editor_Engine!UBlueprintGeneratedClass::GetAuthoritativeClass() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\blueprintgeneratedclass.cpp:196]
UE4Editor_UnrealEd!FMemberReference::ResolveMember<UFunction>() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\classes\engine\memberreference.h:319]
UE4Editor_UnrealEd!`anonymous namespace'::FixOverriddenEventSignature() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\unrealed\private\kismet2\blueprinteditorutils.cpp:6167]
UE4Editor_UnrealEd!FBlueprintEditorUtils::ConformImplementedEvents() [d:\build\++ue4+release-4.19+compile\sync\engine\source\editor\unrealed\private\kismet2\blueprinteditorutils.cpp:6238]
UE4Editor_Engine!UBlueprint::PostLoad() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\blueprint.cpp:775]
UE4Editor_CoreUObject!UObject::ConditionalPostLoad() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:994]
UE4Editor_CoreUObject!FAsyncPackage::PostLoadObjects() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:6281]
UE4Editor_CoreUObject!FAsyncPackage::TickAsyncPackage() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:5545]
UE4Editor_CoreUObject!FAsyncLoadingThread::ProcessAsyncLoading() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:4468]
UE4Editor_CoreUObject!FAsyncLoadingThread::TickAsyncThread() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:4979]
UE4Editor_CoreUObject!FAsyncLoadingThread::TickAsyncLoading() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:4714]
UE4Editor_CoreUObject!ProcessAsyncLoading() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:6873]
UE4Editor_CoreUObject!StaticTick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:489]
UE4Editor_Engine!UGameEngine::Tick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\gameengine.cpp:1220]
UE4Editor!FEngineLoop::Tick() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:3339]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launch.cpp:166]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
kernel32
ntdll