exception on start script

[Micha854]

i have an exception. on the logs read

2024-07-11 09:48:59,087 - __main__ - CRITICAL - Start Battery energy manager
2024-07-11 09:48:59,104 - dbusmonitor - INFO - ===== Search on dbus for services that we will monitor starting... =====
2024-07-11 09:48:59,109 - dbusmonitor - INFO - Found: com.victronenergy.battery.ttyUSB0, scanning and storing items
2024-07-11 09:48:59,112 - dbusmonitor - INFO -        com.victronenergy.battery.ttyUSB0 has device instance 1
2024-07-11 09:48:59,157 - dbusmonitor - INFO - ===== Search on dbus for services that we will monitor finished =====
2024-07-11 09:48:59,158 - __main__ - INFO - Battery service found : com.victronenergy.battery.ttyUSB0
2024-07-11 09:48:59,159 - __main__ - INFO - Energy meter recovered indexes : charged 0 Wh, discharged 0 Wh
2024-07-11 09:48:59,162 - __main__ - ERROR - Fatal exception
Traceback (most recent call last):
  File "/data/battery-energy-meter/battery-energy-meter.py", line 164, in <module>
    chargedEnergy=DbusEnergyMeter(dbusMonitor,battery_service,'/History/ChargedEnergy',chargedEnergy_Wh)
  File "/data/battery-energy-meter/battery-energy-meter.py", line 61, in __init__
    self.dbusRefresh()
  File "/data/battery-energy-meter/battery-energy-meter.py", line 86, in dbusRefresh
    self._dbusMonitor.set_value(self._serviceName,self._path,self.indexWh/1000+self._noise)
  File "/data/battery-energy-meter/dbusmonitor.py", line 395, in set_value
    return self.dbusConn.call_blocking(serviceName, objectPath,
  File "/usr/lib/python3.8/site-packages/dbus/connection.py", line 666, in call_blocking
    reply_message = self.send_message_with_reply_and_block(
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.UnknownObject: Method "SetValue" with signature "v" on interface "com.victronenergy.BusItem" doesn't exist

can you help me. im venus os v3.31