I have tried everything but the FindObject and LoadObject functions always return nullptr

I would like to find this skeletal mesh in the scene through FindObject

248727-answerdhid01.png

I copied the reference and used it in the function. However, it always returns nullptr because the SkeletalMeshActor is not entered.
Is this FindObject function safe?
I know there are alternatives but they can help me understand the reasons
return nullptr?
I have tried everything but the FindObject and LoadObject functions always return nullptr to MyActor
What´s is Wrong?
Would you also like to know what the Outer parameter is?
Thank you

ASkeletalMeshActor* MyActor = LoadObject<ASkeletalMeshActor>(nullptr, TEXT("SkeletalMesh'/Game/FBX/SK_Mannequin.SK_Mannequin_C'"));

ASkeletalMeshActor* MyActor = FindObject<ASkeletalMeshActor>(nullptr, TEXT("SkeletalMesh'/Game/FBX/SK_Mannequin.SK_Mannequin_C'"));

template<class T>
T * FindObject
(
    UObject * Outer,
    const TCHAR * Name,
    bool ExactClass
)