`srt.reserve`를 시도했을때 발생하는 JSONDecodeError

[Taewan-P]

  File "<Project Dir>/test.py", line 37, in reserve_train
    res = srt.reserve(train, special_seat=SeatType.GENERAL_FIRST)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<Project Dir>/venv/lib/python3.12/site-packages/SRT/srt.py", line 274, in reserve
    return self._reserve(
           ^^^^^^^^^^^^^^
  File "<Project Dir>/venv/lib/python3.12/site-packages/SRT/srt.py", line 416, in _reserve
    parser = SRTResponseData(r.text)
             ^^^^^^^^^^^^^^^^^^^^^^^
  File "<Project Dir>/venv/lib/python3.12/site-packages/SRT/response_data.py", line 15, in __init__
    self._json = json.loads(response)
                 ^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/python@3.12/3.12.4/Frameworks/Python.framework/Versions/3.12/lib/python3.12/json/__init__.py", line 346, in loads
    return _default_decoder.decode(s)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/python@3.12/3.12.4/Frameworks/Python.framework/Versions/3.12/lib/python3.12/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/python@3.12/3.12.4/Frameworks/Python.framework/Versions/3.12/lib/python3.12/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None

srt.reserve를 할때, 잔여석이 없을때는 보통 SRTResponseError로 반환되나, 이후 여러번 예약을 시도하다 보면 다음과 같이 JSONDecodeError 가 발생합니다.