Yeelight ceiling lamp 1 shows unavailable

Hi there
Recentty HA shows my yeelight ceiling lamp ‘not available’. Meanwhile i can control the lamp through the app, Google and Alexa. I get the following in the HA logs:

Logger: homeassistant.components.yeelight.light
Source: components/yeelight/light.py:269
Integration: Yeelight (documentation, issues)
First occurred: 6:50:01 PM (1 occurrences)
Last logged: 6:50:01 PM

Cannot determine device type for 192.168.1.17, yeelight_ceiling1_0x00000000049e04d8. Falling back to white only

Can you please help me to fix this ?
Regards
Nick

Sounds like this setting may help.

Thanks for the reply
I added these settings in my configuration yaml but nothing changed…
For yeelight i use the Yeelight intergration. The integration finds the ceiling lamp but then it becomes unavailable.