Character object reference is not compatible with Object Reference ?

Somethings missing from this puzzle, but I’m not understanding how to get past this message?

“Character object reference is not compatible with Object Reference”

See images, Shinbi’s BP was setup already, but trying to copy this onto Seraths BP is not going anywhere because of this error message.

The 1st image is Seraths BP with the error, and the 2nd is Shinbi’s working correctly.

They are two different classes (both inheriting from ACharacter I suppose). You cannot cast between different classes if they are “siblings”. You can only cast between classes which have the same parent/child