ue5 c++ Error C4430:

[user_4c4160364c02527ddef12e7b640e1de0879c2e1e1fb079c06baf25 (遮瑕y)]

When I created a new project that included only the Character class, this error occurred when I built it, but CharacterMovementComp is a characterMovementcomp file that comes with the system, and I don’t understand why it is wrong. Please, everyone.