pymodbus error still occurs with Docker-based HA and v1.13.1

[pz-earthling]

Version of the custom_component

v1.13.1

HA Version

2025.1.4 docker image

Configuration

nothing special

Describe the bug

After updating to v1.13.1 foxess_modbus didn't start anymore. Downgrading to v1.13.0 also did not help.

After checking the HA logs and the vendoring PR, I downgraded the pymodbus version inside the home assistant docker container to 3.6.9 and kept the integration at v1.13.0 - both seems to be necessary to not run into the issue, with v1.13.1 and the system pymodbus at 3.6.9 I still run into the issue. Too tired to debug further today.
Looks like just vendoring doesn't help if a newer pymodbus is installed in /usr/local/lib/python3.13/site-packages (as it is inside the docker container).

Debug log

2025-02-01 21:43:09.852 ERROR (MainThread) [homeassistant.setup] Setup failed for custom integration 'foxess_modbus': Unable to import component: No module named 'pymodbus.register_read_message'
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/setup.py", line 334, in _async_setup_component
    component = await integration.async_get_component()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/loader.py", line 1035, in async_get_component
    self._component_future.result()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/src/homeassistant/homeassistant/loader.py", line 1015, in async_get_component
    comp = await self.hass.async_add_import_executor_job(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        self._get_component, True
        ^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/src/homeassistant/homeassistant/loader.py", line 1075, in _get_component
    ComponentProtocol, importlib.import_module(self.pkg_path)
                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/util/loop.py", line 200, in protected_loop_func
    return func(*args, **kwargs)
  File "/usr/local/lib/python3.13/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 1026, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/config/custom_components/foxess_modbus/__init__.py", line 19, in <module>
    from .client.modbus_client import ModbusClient
  File "/config/custom_components/foxess_modbus/client/modbus_client.py", line 23, in <module>
    from ..vendor.pymodbus import ModbusResponse
  File "/config/custom_components/foxess_modbus/vendor/pymodbus/__init__.py", line 13, in <module>
    from pymodbus.register_read_message import ReadHoldingRegistersResponse
ModuleNotFoundError: No module named 'pymodbus.register_read_message'

[Badlee2020]

I got the error too, I had to delete it, install 1.13.0 then restart. Then re configure the integration.

[canton7]

Mind trying v1.13.2b1?

[Badlee2020]

1.13.2b1 starts, but I get this error...Error reading registers. Type: RegisterType.HOLDING; start: 31000; count: 91; slave: 196 from tcp://192.168.2.235:502: Exception Response(131, 3, IllegalAddress)

With the 1.13.0 the registers were working no problem

[canton7]

OK great, that's something different. Mind opening a new ticket, and include your inverter model and manager version?

The inverter is successfully talking to us, it just doesn't like the register we're reading. That's proabably because we don't support your inverter firmware version, or you need to select it in the advaned settings.

[canton7]

Actually, leaving open until this is released as a non-beta version.

[dropqube]

Adding to this -> I'm using Home Assistant Green and also get the pymodbus error

Logger: homeassistant.config_entries
Source: config_entries.py:3314

Error occurred loading flow for integration foxess_modbus: No module named 'pymodbus.register_read_message'

Using H3 inverter
Firmware versions:
Master: 2.0.5
Slave: 1.0.3
Manager: 1.7.7

[canton7]

This should be fixed in v1.13.2.

[abuesen]

Hi @canton7.

In my environment it works. Thank you for the quick fix.

Best regards, A.