json.decoder.JSONDecodeError

[shaft3796]

Nas: DS21Plus

Code used:

from synology_api import filestation

ip = 'xx.xx.xx.xx
port = '5001'
username = 'xxxxxxxxxxxxxxxxxxx'
password = 'xxxxxxxxxxxxxxxxxxx'

fl = filestation.FileStation(ip, port, username, password, secure=False, dsm_version=7, debug=True, otp_code=None)

Exception:

Traceback (most recent call last):
  File "x\test.py", line 8, in 
    fl = downloadstation.DownloadStation(ip, port, username, password, secure=False, dsm_version=7, debug=True, otp_code=None)
  File "x\Python310\lib\site-packages\synology_api\downloadstation.py", line 11, in __init__
    self.session.login('DownloadStation')
  File "x\Python310\lib\site-packages\synology_api\auth.py", line 42, in login
    self._sid = session_request.json()['data']['sid']
  File "x\Python310\lib\site-packages\requests\models.py", line 910, in json
    return complexjson.loads(self.text, **kwargs)
  File "x\Python310\lib\json\__init__.py", line 346, in loads
    return _default_decoder.decode(s)
  File "x\Python310\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "x\Python310\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Thanks for your help.