Error GrDF send missing data with type="Absence de Données"

[ssenart]

With an input data like:

{'time_period': '23/07/2023', 'start_index_m3': None, 'end_index_m3': None, 'volume_m3': None, 'energy_kwh': None, 'converter_factor_kwh/m3': None, 'temperature_degC': 18.19, 'type': 'Absence de Données', 'timestamp': '2025-01-15T19:00:06.947448'}

We have the error:

2025-01-15 19:00:07,092 ERROR [__main__] An error occured while running Gazpar2HAWS: Traceback (most recent call last):
  File "/home/mrayianalex/Projets/python/venv/lib/python3.12/site-packages/gazpar2haws/__main__.py", line 87, in main
    await bridge.run()
  File "/home/mrayianalex/Projets/python/venv/lib/python3.12/site-packages/gazpar2haws/bridge.py", line 66, in run
    await gazpar.publish()
  File "/home/mrayianalex/Projets/python/venv/lib/python3.12/site-packages/gazpar2haws/gazpar.py", line 74, in publish
    await self._publish_entity(
  File "/home/mrayianalex/Projets/python/venv/lib/python3.12/site-packages/gazpar2haws/gazpar.py", line 132, in _publish_entity
    total += reading[property_name]
TypeError: unsupported operand type(s) for +=: 'float' and 'NoneType'

An error occured while running Gazpar2HAWS: Traceback (most recent call last):
  File "/home/mrayianalex/Projets/python/venv/lib/python3.12/site-packages/gazpar2haws/__main__.py", line 87, in main
    await bridge.run()
  File "/home/mrayianalex/Projets/python/venv/lib/python3.12/site-packages/gazpar2haws/bridge.py", line 66, in run
    await gazpar.publish()
  File "/home/mrayianalex/Projets/python/venv/lib/python3.12/site-packages/gazpar2haws/gazpar.py", line 74, in publish
    await self._publish_entity(
  File "/home/mrayianalex/Projets/python/venv/lib/python3.12/site-packages/gazpar2haws/gazpar.py", line 132, in _publish_entity
    total += reading[property_name]
TypeError: unsupported operand type(s) for +=: 'float' and 'NoneType'

We have to manage None values in index.