Unreal Process crash problem

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Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp] [Line: 3831] Default subobject SpringArmComponent CameraBoom already exists for PlayerCharacter /Script/TheSheriff.Default__PlayerCharacter.

UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_TheSheriff
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_Core
UE4Editor_Core
UE4Editor_Projects
UE4Editor_Projects
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

Hard to figure it out what’s the problem. It didn’t had this problem before it just popped up after i fix the MSB3073 Error
#UE4-27.2

well the error says you have multiple default subobjects.

Without having any idea what you’re actually doing, it would be quite difficult to guess.