我正在用Python写一个不和谐的机器人。我希望当有人登录服务器时，赋予他特定角色

import docx
from docx.enum.text import WD_PARAGRAPH_ALIGnmENT
from docx.shared import Inches,Cm,Mm
import lorem

new_document = docx.Document()



table = new_document.add_table(rows=1,cols=2)

pic_cel = table.rows[0].cells[0].add_paragraph()
run = pic_cel.add_run()
run.add_picture("Image.jpg",width = Mm(45),height = Mm(45))

text = table.rows[0].cells
text[0].width = Inches(50)
text[1].text = 'kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk'
new_document.save("test.docx")

当我启动并且有人进入服务器时，出现以下错误： AttributeError：'Bot'对象没有属性'add_roles'