Fehler beim Aufrufen des Dienstes

I don’t know if I’m supposed to write in German or English, but I think you’ll understand me.
I’m fairly new to Home Assistant and after a lot of struggling, I finally managed to achieve my goal of telling Siri to control my lights.
Today, a new RGB-LED panel arrived and I installed it. Everything went fine at first.
But now, suddenly, I’m getting the following error when I try to change anything using HA:
“Fehler beim Aufrufen des Dienstes light/turn_on./lights/12 resource,/lights/12, not available”

I am sure there are a lot more information that you need from me, just tell me what you have to know.

I am using a Raspberry Pi 3 with Home Assistant OS on an SD card.
As a gateway I’m using the Conbee II with the deConz plugin (works fine).
For Siri integration I’m using the Homekit plugin.
I have 10 lights in 4 rooms plus one motion sensor which is setup correctly but doesn’t turn anything on or off. But that’s a topic for a different thread.
All lights but the one in the living room, which is the panel I was talking about, work as intended.

Thanks in advance for any reply.

I mostly switch to english in the profile when posting logs or screenshots that contain german text.

Sounds like your light isn’t available anymore.
Can you find it in Dev tools/states?

Well, it’s physically here and it’s on.
But when you mention that it might not be available anymore I noticed, that the remote control doesn’t communicate with the device as well. So it’s obviously a problem with the light, not with HA, am I right?

I can find it under Dev tools. It is there with the name “light.wohnzimmer
and the state shows “on”. But after clicking the “i”, there’s nothing it responds to but there’s also no error shown.

Does it work in Phoscon?
What kind of Panel is it?
Supported by deconz?

It does work great in Phoscon.
It is a “Fischer & Honsel” - 20734 Z - Joshua
I have no idea if it’s supported but it does work.

Sorry, no clue then.
I would try to remove and re-add it in HA and maybe in Phoscon.
Also check that the firmware of the conbee and deconz are up to date.
Not sure where to file an issue for the addon, because it looks the issue tracker there is for all addons.

you could look in the log of conbee perhaps theres something, have to restart zigbee2mqtt if this happens to me. or factory reset the device and readd it

Thanks for your quick replies. I don’t have zigbee2mqtt installed and I don’t know how to check the logs of the conbee stick.
I’ll try to reset the device and readd it, but I had to do this several times today and I don’t really want to do it that often.
I’ll get back when the reset process is done.

other option would be to go to the Dienste tab and use a service call “light.turn_XX” on or off with your light manually added into - perhaps it changed the name, there it just show up.

Alright, after deleting and reinstalling the deConz plugin and reconnecting all lamps once again (which worked fine, as usual), I noticed that nothing changed under settings -> devices.
All the old devices with their old names where still in there including all the old entities.
Among those entities was “light.extended_color_light_12” which used to be the LED panel but I already renamed it. Well, looking at the list of devices and entities, all I see is a mess.

Situation at the moment: All devices have been discovered by the Conbee II.
I did not rename any light or create groups or whatever in the Phoscon App, that’s what Home Assistant is supposed to manage, right?

How do I go on from here?

Thanks again for your efforts.

edit: I forgot to mention that I’m either not able to rename or delete any devices in the settings of Home Assistant or I’m looking in the wrong configuration tree.