Packaging Failed! (UE4) skeletalmesh named "AActor" (Please help me)

Hello Friends. Please help me :frowning:

I create a game with blueprint. And I finished today. I want to publish. BUT today, I got the following error while packing the game.

error: Couldn’t find parent type for ‘SkeletalMeshActor’ named ‘AActor’ in current module (Package: /Script/Engine)

what can i do? There is no answer anywhere :frowning:

I just did with blueprint. And I ve got visual studio. Maybe in the past I may have tampered. But i dont know.

Please like telling to a fool :frowning: