matter/fan.py: TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'

[lboue]

The problem

There seems to be a type issue in the Matter integration for the Fan device type.

  File "/usr/src/homeassistant/homeassistant/components/matter/fan.py", line 236, in _calculate_features
    self._attr_speed_count = int(
                             ^^^^
TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'

https://github.com/home-assistant/core/blob/dev/homeassistant/components/matter/fan.py#L236

Device

• Board: Silicon Labs xG24 Explorer Kit
• SDK: Silicon Labs Arduino Core
• Sketch: matter_fan.ino

Full log

Logger: homeassistant.components.matter
Source: components/matter/__init__.py:151
integration: Matter (BETA) (documentation, issues)
First occurred: 1:35:01 PM (2 occurrences)
Last logged: 1:35:03 PM

Unexpected exception: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/matter/__init__.py", line 151, in _client_listen
    await matter_client.start_listening(init_ready)
  File "/usr/local/lib/python3.12/site-packages/matter_server/client/client.py", line 611, in start_listening
    self._handle_incoming_message(msg)
  File "/usr/local/lib/python3.12/site-packages/matter_server/client/client.py", line 649, in _handle_incoming_message
    self._handle_event_message(msg)
  File "/usr/local/lib/python3.12/site-packages/matter_server/client/client.py", line 674, in _handle_event_message
    self._signal_event(event, data=node, node_id=node.node_id)
  File "/usr/local/lib/python3.12/site-packages/matter_server/client/client.py", line 753, in _signal_event
    callback(event, data)
  File "/usr/src/homeassistant/homeassistant/components/matter/adapter.py", line 68, in node_added_callback
    self._setup_node(node)
  File "/usr/src/homeassistant/homeassistant/components/matter/adapter.py", line 148, in _setup_node
    self._setup_endpoint(endpoint)
  File "/usr/src/homeassistant/homeassistant/components/matter/adapter.py", line 225, in _setup_endpoint
    new_entity = entity_info.entity_class(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/matter/entity.py", line 75, in __init__
    self._update_from_device()
  File "/usr/src/homeassistant/homeassistant/components/matter/fan.py", line 172, in _update_from_device
    self._calculate_features()
  File "/usr/src/homeassistant/homeassistant/components/matter/fan.py", line 236, in _calculate_features
    self._attr_speed_count = int(
                             ^^^^
TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'

What version of Home Assistant Core has the issue?

2024.6.2

What was the last working version of Home Assistant Core?

N/A

What type of installation are you running?

Home Assistant OS

Integration causing the issue

python-matter-server

Link to integration documentation on our website

https://www.home-assistant.io/integrations/matter/

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

Matter Fan control works fine with Apple Home app.

Additional information

Fan set to 75%

[home-assistant]

Hey there @home-assistant/matter, mind taking a look at this issue as it has been labeled with an integration (matter) you are listed as a code owner for? Thanks!

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[marcelveldt]

Can you please post the diagnostics dump here of that sample device ?

[lboue]

Can you please post the diagnostics dump here of that sample device ?

Hello. I can't because it fails before.

[marcelveldt]

This is actually a device issue - the device lacks the "SpeedMax" attribute, while this is mandatory:

[lboue]

Thanks @marcelveldt. I will try to fix it.