xClass Extended Properties Permissions Issue

Hello, I configured xClassificationTree and added xClass to the form, but I prompted this error when the object was saved

You have insufficient permissions to perform'classify 'operation for item id' 75A0A828D4754133B954DEB73407F40E 'by xClass id' B3D5B57093584A648E333A16241BBB6A '
How to solve it? The following is my relevant configuration diagram.