Парсинг учебного сайта

Помогите пожалуйста, при коде:
import trio

from netschoolapi import NetSchoolAPI


async def main():
api = NetSchoolAPI(" https://sgo.edu-74.ru/about.html ")
await api.login("мойлогин", "мойпароль", 'мояшкола')
print(await api.get_form_data())

trio.run (main)

Выдает ошибку:

C:\Users\Admin\PycharmProjects\pythonProject\.venv\Scripts\python.exe C:\Users\Admin\PycharmProjects\pythonProject\.venv\NS_test.py
Traceback (most recent call last):
File "C:\Users\Admin\PycharmProjects\pythonProject\.venv\NS_test.py", line 11, in <module>
trio.run (main)
File "C:\Users\Admin\PycharmProjects\pythonProject\.venv\Lib\site-packages\trio\_core\_run.py", line 2417, in run
raise runner.main_task_outcome.error
File "C:\Users\Admin\PycharmProjects\pythonProject\.venv\NS_test.py", line 8, in main
await api.login("логин", "пароль", 'школа')
File "C:\Users\Admin\PycharmProjects\pythonProject\.venv\Lib\site-packages\netschoolapi\client.py", line 34, in login
data = resp.json()
^^^^^^^^^^^
File "C:\Users\Admin\PycharmProjects\pythonProject\.venv\Lib\site-packages\httpx\_models.py", line 756, in json
return jsonlib.loads(self.text, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Admin\AppData\Local\Programs\Python\Python312\Lib\json\__init__.py", line 346, in loads
return _default_decoder.decode(s)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Admin\AppData\Local\Programs\Python\Python312\Lib\json\decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Admin\AppData\Local\Programs\Python\Python312\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)

Process finished with exit code 1

Как это можно исправить?