'NoneType' object is not callable

Пытаюсь сохранить картинку со штрихкодом:

import barcode
from barcode.writer import ImageWriter

def show_barcode(message,tekUser):
    EAN = barcode.get_barcode_class('ean13')
    ean = EAN(tekUser.karta, writer=ImageWriter())
    fullname = ean.save('c:\\'+str(tekUser.chat_id))

Получаю ошибку TypeError: **'NoneType' object is not callable**

Определил что ошибка возникает при вызове ImageWriter()

Что я делаю не так и как правильно?

Traceback (most recent call last):

File "C:\Python\lib\site-packages\telebot\util.py", line 62, in run   task(*args, **kwargs)

File "C:/SlawaBot/main.py", line 58, in inlin
    show_barcode(c.message,tekUser)

File "C:\SlawaBot\users.py", line 50, in show_barcode
    ean = EAN(tekUser.karta, writer=ImageWriter())

TypeError: 'NoneType' object is not callable
"Traceback (most recent call last):

File "C:/SlawaBot/main.py", line 126, in <module>
    bot.polling(none_stop=True)

File "C:\Python\lib\site-packages\telebot\__init__.py", line 415, in polling
    self.__threaded_polling(none_stop, interval, timeout)

File "C:\Python\lib\site-packages\telebot\__init__.py", line 439, in __threaded_polling
    self.worker_pool.raise_exceptions()

File "C:\Python\lib\site-packages\telebot\util.py", line 111, in raise_exceptions
    six.reraise(self.exc_info[0], self.exc_info[1], self.exc_info[2])

File "C:\Python\lib\site-packages\six.py", line 703, in reraise
    raise value

File "C:\Python\lib\site-packages\telebot\util.py", line 62, in run
    task(*args, **kwargs)

File "C:/SlawaBot/main.py", line 58, in inlin
    show_barcode(c.message,tekUser)

File "C:\SlawaBot\users.py", line 50, in show_barcode
    ean = EAN(tekUser.karta, writer=ImageWriter())

TypeError: 'NoneType' object is not callable

tekUser.karta не NULL, проверял

Python 3.8, что и где править надо?

насчет pillow

Requirment alredy satisfied

Оба пакета в одной и той же папке