Why I can not open the BP of Metahuman

Development Character & Animation
1

I have created 4 metahuman.but I can not open their BP.If i did it.The engien will be closed.

LoginId:d88b9ae84bca24accd796d9c0207c7a2
EpicAccountId:e62d1841ad714cca83cb73dcb9949834

Assertion failed: Key != Value [File:D:\build++UE5\Sync\Engine\Source\Runtime\MeshUtilitiesCommon\Private\OverlappingCorners.cpp] [Line: 86]

UnrealEditor_MeshUtilitiesCommon
UnrealEditor_MeshUtilitiesCommon
UnrealEditor_MeshUtilitiesCommon
UnrealEditor_MeshUtilities
UnrealEditor_MeshUtilities
UnrealEditor_SkeletalMeshUtilitiesCommon
UnrealEditor_SkeletalMeshUtilitiesCommon
UnrealEditor_SkeletalMeshUtilitiesCommon
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll