Woocommerce API- raise JSONDecodeError("Expecting value", s, err.value) from None

Traceback (most recent call last):
  File "test.py", line 11, in <module>
    print(wcapi.get("products").json())
  File "C:\Users\Kevin\Anaconda3\lib\site-packages\requests\models.py", line 897, in json
    return complexjson.loads(self.text, **kwargs)
  File "C:\Users\Kevin\Anaconda3\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\Kevin\Anaconda3\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\Kevin\Anaconda3\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)

from woocommerce import API

wcapi = API(
    url="http://www.xx.net/",
    consumer_key="ck_xxxxxcea1735394c5f82dbb2b190d4b5c79e6",
    consumer_secret="cs_xxxxx62fe133302510438b20ffb7f4ebf9",
    version="wc/v3"
)


print(wcapi.get("products").json())