json.decoder.JSONDecodeError

[Sicmatr1x]

https://pub.alimama.com/report/getTbkPaymentDetails.json?startTime=2018-12-14&endTime=2019-03-13&payStatus=&queryType=1&toPage=1&perPageSize=20
Traceback (most recent call last):
  File "C:/Users/GUOJO/PycharmProjects/LearnSpider/src/auto-login-alimama/alimama.py", line 59, in <module>
    sp.get_taoke_order_list()
  File "C:/Users/GUOJO/PycharmProjects/LearnSpider/src/auto-login-alimama/alimama.py", line 51, in get_taoke_order_list
    data = json.loads(web_data.text)
  File "C:\Users\GUOJO\AppData\Local\Programs\Python\Python36\lib\json\__init__.py", line 354, in loads
    return _default_decoder.decode(s)
  File "C:\Users\GUOJO\AppData\Local\Programs\Python\Python36\lib\json\decoder.py", line 339, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\GUOJO\AppData\Local\Programs\Python\Python36\lib\json\decoder.py", line 357, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 2 column 1 (char 2)