I use the motion library to find the ballet motion and copy the Rokoko Mocap to my character. Then I modify some actions.

But I don’t know why when I repeatedly click the character’s skeleton and transferred the Rokoko animation into character, nothing happened.
Later, I found I have reversed the order of Character and Source, so the above error occurs.
At first, I haven’t modified the face, so the features are separated.
Then I rigged the face and repainted the hat’s skin: