Error 500 when updating state

[TheoLeCalvar]

I have a strange behavior with my install, the following code fails because the API returns an error 500.
It's a SERELIA GREEN LINK which is recognized as a a Galevo. It used to work fine a few months back.

import asyncio
from ariston import Ariston


ariston = Ariston()

user = "my_user"
passwd = "my_pass"
dev_id = "gw_id"

asyncio.run(ariston.async_connect(user, passwd))

device = asyncio.run(ariston.async_hello(dev_id))


device.update_state()

Traceback (most recent call last):
  File "/home/goldensuneur/work/ariston/test.py", line 16, in <module>
    device.update_state()
    ~~~~~~~~~~~~~~~~~~~^^
  File "/home/goldensuneur/work/ariston/ariston/galevo_device.py", line 96, in update_state
    self.data = self.api.get_properties(
                ~~~~~~~~~~~~~~~~~~~~~~~^
        self.gw,
        ^^^^^^^^
    ...<2 lines>...
        self.umsys,
        ^^^^^^^^^^^
    )
    ^
  File "/home/goldensuneur/work/ariston/ariston/ariston_api.py", line 166, in get_properties
    properties = self._post(
        f"{self.__api_url}{ARISTON_REMOTE}/{ARISTON_DATA_ITEMS}/{gw_id}/get?umsys={umsys}",
    ...<5 lines>...
        },
    )
  File "/home/goldensuneur/work/ariston/ariston/ariston_api.py", line 515, in _post
    return self.__request("POST", path, None, body)
           ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/goldensuneur/work/ariston/ariston/ariston_api.py", line 503, in __request
    return self.__request(method, path, params, body, True)
           ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/goldensuneur/work/ariston/ariston/ariston_api.py", line 504, in __request
    raise ConnectionException(response.status_code)
ariston.ariston_api.ConnectionException: 500

After a bit of investigation I noticed that the backend fails only when specific items are asked. After trial and error I found that asking for any of the commented properties will trigger a 500 error.

class DeviceProperties(ExtendedStrEnum):
    """Constants for device properties"""

    # PLANT_MODE = "PlantMode"
    IS_FLAME_ON = "IsFlameOn"
    IS_HEATING_PUMP_ON = "IsHeatingPumpOn"
    HOLIDAY = "Holiday"
    OUTSIDE_TEMP = "OutsideTemp"
    # WEATHER = "Weather"
    # HEATING_CIRCUIT_PRESSURE = "HeatingCircuitPressure"
    CH_FLOW_TEMP = "ChFlowTemp"
    # CH_FLOW_SETPOINT_TEMP = "ChFlowSetpointTemp"
    # DHW_TEMP = "DhwTemp"
    DHW_STORAGE_TEMPERATURE = "DhwStorageTemperature"
    # DHW_TIMEPROG_COMFORT_TEMP = "DhwTimeProgComfortTemp"
    # DHW_TIMEPROG_ECONOMY_TEMP = "DhwTimeProgEconomyTemp"
    # DHW_MODE = "DhwMode"
    # AUTOMATIC_THERMOREGULATION = "AutomaticThermoregulation"
    # ANTILEGIONELLA_ON_OFF = "AntilegionellaOnOff"
    ANTILEGIONELLA_TEMP = "AntilegionellaTemp"
    # ANTILEGIONELLA_FREQ = "AntilegionellaFreq"
    HYBRID_MODE = "HybridMode"
    BUFFER_CONTROL_MODE = "BufferControlMode"
    BUFFER_TIME_PROG_COMFORT_HEATING_TEMP = "BufferTimeProgComfortHeatingTemp"
    BUFFER_TIME_PROG_ECONOMY_HEATING_TEMP = "BufferTimeProgEconomyHeatingTemp"
    BUFFER_TIME_PROG_COMFORT_COOLING_TEMP = "BufferTimeProgComfortCoolingTemp"
    BUFFER_TIME_PROG_ECONOMY_COOLING_TEMP = "BufferTimeProgEconomyCoolingTemp"
    IS_QUIET = "IsQuite"  # ariston misspelled IsQuiet


class ThermostatProperties(ExtendedStrEnum):
    """Constants for thermostat properties"""

    # ZONE_MEASURED_TEMP = "ZoneMeasuredTemp"
    # ZONE_DESIRED_TEMP = "ZoneDesiredTemp"
    # ZONE_COMFORT_TEMP = "ZoneComfortTemp"
    # ZONE_MODE = "ZoneMode"
    # ZONE_HEAT_REQUEST = "ZoneHeatRequest"
    # ZONE_ECONOMY_TEMP = "ZoneEconomyTemp"
    ZONE_DEROGA = "ZoneDeroga"
    # ZONE_IS_ZONE_PILOT_ON = "IsZonePilotOn"
    # ZONE_VIRT_TEMP_OFFSET_HEAT = "VirtTempOffsetHeat"
    # HEATING_FLOW_TEMP = "HeatingFlowTemp"
    # HEATING_FLOW_OFFSET = "HeatingFlowOffset"
    COOLING_FLOW_TEMP = "CoolingFlowTemp"
    COOLING_FLOW_OFFSET = "CoolingFlowOffset"
    ZONE_NAME = "ZoneName"
    # VIRT_TEMP_SETPOINT_HEAT = "VirtTempSetpointHeat"
    VIRT_TEMP_SETPOINT_COOL = "VirtTempSetpointCool"
    # VIRT_COMFORT_TEMP = "VirtComfortTemp"
    # VIRT_REDUCED_TEMP = "VirtReducedTemp"
    ZONE_VIRT_TEMP_OFFSET_COOL = "VirtTempOffsetCool"

Do you have any idea of the source of the problem and how I can troubleshoot it ? There is no problems when I use the official website so do you have advice on what to check to find what is different between the call made by the official website and your project ?