if possible, I will try to send a log file
Assertion failed: bRequiresModelPopulation || DataModel != nullptr || DataModelInterface != nullptr [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\Animation\AnimSequenceBase.cpp] [Line: 130] Invalid Animation Sequence base state, no data model found past upgrade object version. AnimSequenceBase:/Game/anim/drawanim_armsmesh_Anim_Armature_ArmatureAction.drawanim_armsmesh_Anim_Armature_ArmatureAction
this is the problem from the picture above that the editor is complaining about
I think I explained everything, I really hope that someone will respond