[Errno Invalid JSON: %s] Extra data

[fangfufu]

I get the following errors

Traceback (most recent call last):
  File "hb-downloader.py", line 41, in <module>
    hapi.login(ConfigData.username, ConfigData.password, ConfigData.authy_token)
  File "/home/fangfufu/src/hb-downloader/humble_api/humble_api.py", line 115, in login
    data = self.__parse_data(response)
  File "/home/fangfufu/src/hb-downloader/humble_api/humble_api.py", line 255, in __parse_data
    raise HumbleParseException("Invalid JSON: %s", str(e), request=response.request, response=response)
humble_api.exceptions.humble_parse_exception.HumbleParseException: [Errno Invalid JSON: %s] Extra data: line 1 column 5 - line 5 column 2 (char 4 - 77)

I have tried using the cookies.txt