when i come to save the game it will crash when i tame a beta wyvern without the wyvern tame it will save normally anyone know whats going on ?

i will get something like this when i come to save the game:

Fatal error!



ShooterGame.exe!UInterpTrackFloatProp::UpdateTrack() (0x00007ff7297824c0) + 14 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\interpolation.cpp:5783]
ShooterGame.exe!UInterpTrack::ConditionalUpdateTrack() (0x00007ff72977638b) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\interpolation.cpp:3153]
ShooterGame.exe!UInterpGroup::UpdateGroup() (0x00007ff729774b35) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\interpolation.cpp:2278]
ShooterGame.exe!AMatineeActor::UpdateInterp() (0x00007ff72977189d) + 157 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\interpolation.cpp:798]
ShooterGame.exe!AMatineeActor::SetPosition() (0x00007ff729770e12) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\interpolation.cpp:605]
ShooterGame.exe!AMatineeActor::execSetPosition() (0x00007ff729c7d77c) + 220 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\classes\matinee\matineeactor.h:58]
ShooterGame.exe!UFunction::Invoke() (0x00007ff728f9d78c) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\class.cpp:3691]
ShooterGame.exe!UObject::CallFunction() (0x00007ff728fe86f2) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:399]
ShooterGame.exe!UObject::ProcessContextOpcode() (0x00007ff728feb9f6) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1407]
ShooterGame.exe!UObject::ProcessInternal() (0x00007ff728fe8d1f) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:594]
ShooterGame.exe!UObject::CallFunction() (0x00007ff728fe8af2) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:509]
ShooterGame.exe!UObject::ProcessInternal() (0x00007ff728fe8d1f) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:594]
ShooterGame.exe!UFunction::Invoke() (0x00007ff728f9d78c) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\class.cpp:3691]
ShooterGame.exe!UObject::ProcessEvent() (0x00007ff728fe9e68) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:907]
ShooterGame.exe!AActor::ProcessEvent() (0x00007ff72961badf) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\actor.cpp:590]
ShooterGame.exe!TMulticastScriptDelegate<FWeakObjectPtr>::ProcessMulticastDelegate<UObject>() (0x00007ff7288f1d90) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\core\public\uobject\scriptdelegates.h:390]
ShooterGame.exe!AActor::MatineeUpdated() (0x00007ff729622822) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\actor.cpp:2487]
ShooterGame.exe!AMatineeActor::UpdateInterp() (0x00007ff729771966) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\interpolation.cpp:807]
ShooterGame.exe!AMatineeActor::StepInterp() (0x00007ff729773634) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\interpolation.cpp:1169]
ShooterGame.exe!AMatineeActorManager::Tick() (0x00007ff7297903d4) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\interpolation.cpp:9931]
ShooterGame.exe!AActor::TickActor() (0x00007ff72961bfae) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\actor.cpp:732]
ShooterGame.exe!TGraphTask<FTickTaskSequencer::FTickFunctionTask>::ExecuteTask() (0x00007ff72996addc) + 30 bytes [f:\ue4\unrealengine\engine\source\runtime\core\public\async\taskgraphinterfaces.h:665]
ShooterGame.exe!FTaskThread::ProcessTasks() (0x00007ff728e98e46) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\core\private\async\taskgraph.cpp:338]
ShooterGame.exe!FTaskThread::ProcessTasksUntilQuit() (0x00007ff728e9892d) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\core\private\async\taskgraph.cpp:177]
ShooterGame.exe!FTaskGraphImplementation::WaitUntilTasksComplete() (0x00007ff728e99d5d) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\core\private\async\taskgraph.cpp:882]
ShooterGame.exe!FTaskGraphInterface::WaitUntilTaskCompletes() (0x00007ff728f32e11) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\core\public\async\taskgraphinterfaces.h:187]
ShooterGame.exe!FTickTaskSequencer::ReleaseTickGroup() (0x00007ff729962842) + 269 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\ticktaskmanager.cpp:187]
ShooterGame.exe!FTickTaskManager::RunTickGroup() (0x00007ff7299671ba) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\ticktaskmanager.cpp:851]
ShooterGame.exe!UWorld::RunTickGroup() (0x00007ff7297cd3ab) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\leveltick.cpp:691]
ShooterGame.exe!UWorld::Tick() (0x00007ff7297ce6ce) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\leveltick.cpp:1175]
ShooterGame.exe!UGameEngine::Tick() (0x00007ff7296ffb4b) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\engine\private\gameengine.cpp:925]
ShooterGame.exe!FEngineLoop::Tick() (0x00007ff7288d6d09) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\launch\private\launchengineloop.cpp:2309]
ShooterGame.exe!GuardedMain() (0x00007ff7288d158c) + 0 bytes [f:\ue4\unrealengine\engine\source\runtime\launch\private\launch.cpp:139]
ShooterGame.exe!GuardedMainWrapper() (0x00007ff7288d81ea) + 5 bytes [f:\ue4\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
ShooterGame.exe!WinMain() (0x00007ff7288d8318) + 8 bytes [f:\ue4\unrealengine\engine\source\runtime\launch\private\windows\launchwindows.cpp:209]
ShooterGame.exe!__tmainCRTStartup() (0x00007ff72a843175) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
KERNEL32.DLL!UnknownFunction (0x00007ffb982513d2) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffb9a9e5454) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffb9a9e5454) + 0 bytes [UnknownFile:0]