JSON Decode Error - Githubissues

Looks like that the API sometimes responds with non-json:
Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/requests/models.py", line 971, in json
    return complexjson.loads(self.text, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/simplejson/__init__.py", line 514, in loads
    return _default_decoder.decode(s)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/simplejson/decoder.py", line 386, in decode
    obj, end = self.raw_decode(s)
               ^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/simplejson/decoder.py", line 416, in raw_decode
    return self.scan_once(s, idx=_w(s, idx).end())
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
simplejson.errors.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 696, in async_update_ha_state
    await self.async_device_update()
  File "/usr/src/homeassistant/homeassistant/helpers/entity.py", line 957, in async_device_update
    await self.async_update()
  File "/config/custom_components/wnsm/live_sensor.py", line 41, in async_update
    zaehlpunkt = await self.get_zaehlpunkt(smartmeter)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/wnsm/base_sensor.py", line 107, in get_zaehlpunkt
    contracts = await self.hass.async_add_executor_job(smartmeter.zaehlpunkte)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/wnsm/api/client.py", line 244, in zaehlpunkte
    return self._call_api("zaehlpunkte")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/wnsm/api/client.py", line 234, in _call_api
    return response.json()
           ^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/requests/models.py", line 975, in json
    raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)
requests.exceptions.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
DarwinsBuddy / WienerNetzeSmartmeter

JSON Decode Error #200
