Что не так с ТГ ботом? py

Traceback (most recent call last):
  File "main.py", line 1607, in <module>
    app.polling(True)
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\lib\site-packages\telebot\__init__.py", line 496, in polling
    self.__threaded_polling(none_stop, interval, timeout, long_polling_timeout)
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\lib\site-packages\telebot\__init__.py", line 555, in __threaded_polling
    raise e
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\lib\site-packages\telebot\__init__.py", line 518, in __threaded_polling
    self.worker_pool.raise_exceptions()
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\lib\site-packages\telebot\util.py", line 117, in raise_exceptions
    raise self.exception_info
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\lib\site-packages\telebot\util.py", line 69, in run
    task(*args, **kwargs)
  File "main.py", line 480, in deposit_type
    bill_url = qiwi.generate_bill(payment_sum, payment_id)
  File "C:\Users\kiler\Desktop\50kvsumke\qiwi.py", line 30, in generate_bill
    response = requests.put(f"https://api.qiwi.com/partner/bill/v1/bills/{bill_id}", headers=headers,
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\lib\site-packages\requests\models.py", line 898, in json
    return complexjson.loads(self.text, **kwargs)
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\lib\json\__init__.py", line 357, in loads
    return _default_decoder.decode(s)
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\kiler\AppData\Local\Programs\Python\Python38-32\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)