django报错：add_atr() takes 0 positional arguments but 1 was given

TypeError at /add_atr/ add_atr() takes 0 positional arguments but 1 was given Request Method: GET Request URL: http://127.0.0.1:8000/add_stu/ Django Version: 3.0.3 Exception Type: TypeError Exception Value: add_atr() takes 0 positional arguments but 1 was given Exception Location: E:\env\django9\lib