Groups becomes unavailable on HA.

[antibill51]

What happened?

I have a similar problem than#9629 but only concerns groups.
Sometimes groups become unavailable on the HA side.

optimistic: true/false
retain: true/false
in groups.yaml don't change anything.

Home Assistant 2023.7.2
Supervisor 2023.07.1
Operating System 10.3

Z2M 1.32.1-dev

What did you expect to happen?

When restarting Z2M or HA, the discovery message should be sent for groups as well, not just for individual entities.

How to reproduce it (minimal and precise)

create a group (of lights for example).
It is logically visible on the HA side.
Restarting the MQTT brocker. (OBLIGATORY?)
Restarting HA.
The group becomes unavailable.

The only way have found is to add an entity to each group that is already part of it so that the group entity reappears on the HA side.

Zigbee2MQTT version

1.32.1-dev commit: 313865b

Adapter firmware version

20220219

Adapter

HamGeek CC2652P Tech

Debug log

No response

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days

[antibill51]

By adding
availability: false
for each group, the problem has not reoccurred for approximately 2 weeks.

Is it normal to have to go through this?
Thanks

[rccoleman]

I've just been struggling with a similar issue where some groups have an availability state of offline, when I do not have availability enabled anywhere. It only affected a subset of my groups, with no obvious commonality between the ones that were affected and the ones that were not. I have availability: false at the bottom of my configuration.yaml (not put there explicitly, but I think it was automatic as the default), but I just added it to each group definition to see if it helps.

I noticed that if I created a group and left it empty, an availability subtopic would be created with state: online, but as soon as I added a device, it would quickly switch to offline, even though I could toggle the device right from the panel in the group definition. When I would restart Z2M, I would also often see that group definition have no members in the UI, but they would all appear when I added one of the existing members back in. I think there's something weird going on with group definitions.

Here are my Zigbee2MQTT versions:

Zigbee2MQTT version
1.32.2-dev commit: [4949a54](https://github.com/Koenkk/zigbee2mqtt/commit/4949a54)
Coordinator type
zStack3x0
Coordinator revision
20221226
Coordinator IEEE Address
xxx
Frontend version
0.6.134

I also see these pretty reliability when I change the members in a group in HA, but is probably unrelated:

2023-08-27 10:04:03.511 ERROR (MainThread) [homeassistant.util.logging] Exception in state_received when handling msg on 'zigbee2mqttp/Kit Light Group': ''
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/mqtt/debug_info.py", line 44, in wrapper
    msg_callback(msg)
  File "/usr/src/homeassistant/homeassistant/components/mqtt/light/schema_json.py", line 351, in state_received
    values = json_loads_object(msg.payload)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/util/json.py", line 52, in json_loads_object
    value: JsonValueType = json_loads(__obj)
                           ^^^^^^^^^^^^^^^^^
orjson.JSONDecodeError: Input is a zero-length, empty document: line 1 column 1 (char 0)

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 7 days