ha-dyson: ValueError: invalid literal for int() with base 10: 'NONE'

I have a Home Assistant dyson integration and the following error message appears in the log: `File “/usr/local/lib/python3.10/site-packages/libdyson/dyson_pure_humidify_cool.py”, line 110, in formaldehyde return int(self._get_environmental_field_value(“hcho”))

File “/usr/local/lib/python3.10/site-packages/libdyson/dyson_device.py”, line 292, in _get_environmental_field_value return int(value)

ValueError: invalid literal for int() with base 10: ‘NONE’`