No Cast To PlayerCharacter in BP Anim (UE 4.23)

I have some animations and I want use that for skeletal mesh in BP but my installed UE4 missing that command.
Seriously I don’t want to reinstall Engine, I have Important maps of the world.

Is your player character, really named PlayerCharacter? I doubt that. You should cast to whethever player character BP or C++ you created.
For example, in the third person template, the player character BP is named ThirdPersonCharacter. In the first person template, is FirstPersonCharacter.