Вк бот не отправляет документ

def send_gif(sender):
    upload_doc = upload.document(doc = "img/papich/papich.gif")[0]
    attachment = "doc{}_{}".format(upload_doc["owner_id"], upload_doc["id"])
    millis = int(round(time.time() * 1000))
    authorize.method("messages.send", {"chat_id": sender, "message": "", "random_id": millis, "attachment": attachment})`введите сюда код`

Вот функция, отвечающий за отправку документа в беседу

Выдает такую ошибку:

Traceback (most recent call last):
  File "bot.py", line 209, in <module>
    send_gif(sender)
  File "bot.py", line 26, in send_gif
    upload_doc = upload.document(doc = "img/papich/papich.gif")[0]
  File "C:\Users\jmiha\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\vk_api\upload.py", line 405, in document
    url = method(**values)['upload_url']
  File "C:\Users\jmiha\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\vk_api\vk_api.py", line 686, in __call__
    return self._vk.method(self._method, kwargs)
  File "C:\Users\jmiha\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.7_qbz5n2kfra8p0\LocalCache\local-packages\Python37\site-packages\vk_api\vk_api.py", line 646, in method
    raise error
vk_api.exceptions.ApiError: [27] Group authorization failed: method is unavailable with group auth.