error related to datetime

[mehranj73]

Traceback (most recent call last):
File "C:/Users/Mehran/PycharmProjects/fortnitebot/main.py", line 12, in
password=p, email=e)
File "C:\Users\Mehran\PycharmProjects\fortnitebot\venv\lib\site-packages\pfaw\core.py", line 24, in init
expires_at = utils.convert_iso_time(token_response.get('expires_at'))
File "C:\Users\Mehran\PycharmProjects\fortnitebot\venv\lib\site-packages\pfaw\utils.py", line 6, in convert_iso_time
return datetime.strptime(isotime, '%Y-%m-%dT%H:%M:%S.%fZ')
TypeError: strptime() argument 1 must be str, not None``