Integration not start after HA 2025.9.0

[matake31]

It won't load after update to HA 2025.9.0.

This from my log.

2025-09-04 09:09:48.141 ERROR (MainThread) [homeassistant.config_entries] Error setting up entry Fronius for fronius_modbus
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/config_entries.py", line 751, in __async_setup_with_context
result = await component.async_setup_entry(hass, self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/fronius_modbus/init.py", line 45, in async_setup_entry
await entry.runtime_data.init_data()
File "/config/custom_components/fronius_modbus/hub.py", line 55, in wrapper
raise error
File "/config/custom_components/fronius_modbus/hub.py", line 49, in wrapper
result = await func(self, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/fronius_modbus/hub.py", line 61, in init_data
await self._hass.async_add_executor_job(self.check_pymodbus_version)
File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
result = self.fn(*self.args, **self.kwargs)
File "/config/custom_components/fronius_modbus/hub.py", line 73, in check_pymodbus_version
raise Exception(f"pymodbus {version('pymodbus')} found, please update to {self.PYMODBUS_VERSION} or higher")
Exception: pymodbus 3.11.1 found, please update to 3.8.3 or higher

[andreastomincssi]

same issue, just one day after starting using it :(

[waltshomeassistant]

Same here. Subscribed.

Hopefully can find a fix soon, one of the handiest integrations there is! Well done on all the great work so far.

[vistalba]

Same issue for me. So I updated the PYMODBUS_VERSION = '3.11.1' in hub.py. Now I run into another issue:

error reading registers. unknown error. connected True address: 40004 count: 65 unit id: 1 type <class 'TypeError'> error ModbusClientMixin.read_holding_registers() got an unexpected keyword argument 'slave'

Error reading inverter info 10.100.1.48:502 unit id: 1
Traceback (most recent call last):
  File "/config/custom_components/fronius_modbus/froniusmodbusclient.py", line 69, in init_data
    result = await self.read_device_info_data(prefix='i_', unit_id=self._inverter_unit_id)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/fronius_modbus/froniusmodbusclient.py", line 146, in read_device_info_data
    regs = await self.get_registers(unit_id=unit_id, address=COMMON_ADDRESS, count=65)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/fronius_modbus/extmodbusclient.py", line 115, in get_registers
    if data.isError():
       ^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'isError'

Exception in wrapper Error reading inverter info unit id: 1

Error setting up entry Fronius (Modbus) for fronius_modbus
Traceback (most recent call last):
  File "/config/custom_components/fronius_modbus/froniusmodbusclient.py", line 69, in init_data
    result = await self.read_device_info_data(prefix='i_', unit_id=self._inverter_unit_id)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/fronius_modbus/froniusmodbusclient.py", line 146, in read_device_info_data
    regs = await self.get_registers(unit_id=unit_id, address=COMMON_ADDRESS, count=65)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/fronius_modbus/extmodbusclient.py", line 115, in get_registers
    if data.isError():
       ^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'isError'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/config_entries.py", line 751, in __async_setup_with_context
    result = await component.async_setup_entry(hass, self)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/fronius_modbus/__init__.py", line 45, in async_setup_entry
    await entry.runtime_data.init_data()
  File "/config/custom_components/fronius_modbus/hub.py", line 55, in wrapper
    raise error
  File "/config/custom_components/fronius_modbus/hub.py", line 49, in wrapper
    result = await func(self, *args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/fronius_modbus/hub.py", line 62, in init_data
    result = await self._client.init_data()
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/fronius_modbus/froniusmodbusclient.py", line 72, in init_data
    raise Exception(f"Error reading inverter info unit id: {self._inverter_unit_id}")
Exception: Error reading inverter info unit id: 1

[rodxavier]

I included the fix for this on my PR on #49.

[vistalba]

I included the fix for this on my PR on #49.

Fixes the issue for me.

[Rainman67]

Please can somebody tell me, what exactly to do? I replaced the files "manifest.json" and "extmodbusclient.py" but after a restart of home assistant the problem persists.

[DAVIZINH0]

hello.
same problem. can someone tell us how to change to fix, until apears a new version?
thanks a lot!!!

[rodxavier]

@Rainman67, if you're replacing manually, you also need to do hub.py.

@DAVIZINH0, you can replace the files manually, or you can replace the installed version with my fork until the changes are merged to the main repo.

[waltshomeassistant]

@Rainman67, if you're replacing manually, you also need to do hub.py.

@DAVIZINH0, you can replace the files manually, or you can replace the installed version with my fork until the changes are merged to the main repo.

Perfect, thanks for your help!

Replacing "manifest.json", "extmodbusclient.py" and "hub.py" from your fork fixed it for now.

[DAVIZINH0]

Hello.
I replace "manifest.json", "extmodbusclient.py" and "hub.py".
But a lot of entitys not works :-(
and have errors in log.

I must replace something more?? or make other change?

thanks!!

[rodxavier]

@DAVIZINH0, are you replacing it with files from here, https://github.com/redpomodoro/fronius_modbus/pull/49/files?

[DAVIZINH0]

home-assistant_fronius_modbus_2025-09-05T11-06-34.606Z.log

@DAVIZINH0, are you replacing it with files from here, https://github.com/redpomodoro/fronius_modbus/pull/49/files?

yes!. replacing. refresh de integration. restart the home assistant. and the problem is the same.
But i only replace this 3 files: "manifest.json", "extmodbusclient.py" and "hub.py".

its ok?, only this 3 files?

EDIT:
i attach the log during a refresh procedure with the integration.
(enable log, refresh integration, wait, and stop log)

[waltshomeassistant]

Hello. I replace "manifest.json", "extmodbusclient.py" and "hub.py". But a lot of entitys not works :-( and have errors in log.

I must replace something more?? or make other change?

thanks!!

I have the same.

The majority is working after replacing those three files but several sensors are just showing “unknown” now. Including “charge status” sensor.

[4webat]

https://github.com/redpomodoro/fronius_modbus/pull/49/files
Thanks, all files updated = works

[DAVIZINH0]

works, i dont know what happend, but replace again and works.
thanks