Bug: Python traceback on RPi

[vlachoudis]

I am trying to setup the airsend on home assistant
and during loading I've got the following traceback

Traceback (most recent call last):
  File "/home/bnv/hass/lib/python3.9/site-packages/homeassistant/loader.py", line 744, in get_platform
    cache[full_name] = self._import_platform(platform_name)
  File "/home/bnv/hass/lib/python3.9/site-packages/homeassistant/loader.py", line 761, in _import_platform
    return importlib.import_module(f"{self.pkg_path}.{platform_name}")
  File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 790, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/home/bnv/.homeassistant/custom_components/airsend/sensor.py", line 81, in <module>
    class AirSendStateSensor(BinarySensorEntity):
  File "/home/bnv/.homeassistant/custom_components/airsend/sensor.py", line 117, in AirSendStateSensor
    def device_class(self) -> BinarySensorDeviceClass | None:
TypeError: unsupported operand type(s) for |: 'EnumMeta' and 'NoneType'