Ошибка с pyqiwip2p, ошибка декодировки, в чем проблема?

auth_qiwi='BLABLABLA'
p2p=QiwiP2P(auth_key=auth_qiwi)

Выдает ошибку:

Traceback (most recent call last):
  File "C:\Users\gelse\PycharmProjects\telebot_wildber\main.py", line 12, in <module>
    p2p=QiwiP2P(auth_key=auth_qiwi)
  File "C:\Users\gelse\PycharmProjects\telebot_wildber\venv\lib\site-packages\pyqiwip2p\Qiwip2p.py", line 42, in __init__
    self.validate_privkey(auth_key)
  File "C:\Users\gelse\PycharmProjects\telebot_wildber\venv\lib\site-packages\pyqiwip2p\Qiwip2p.py", line 94, in validate_privkey
    key_decoded = b64decode(privkey).decode()
UnicodeDecodeError: 'utf-8' codec can't decode bytes in position 3-5: invalid continuation byte

Process finished with exit code 1

Ругается на строку с создание p2p клиента.