All lights unavailable (deconz) but switces and sensors are ok

I have been running Home Assistant together with Deconz.
I have lights switches and sensors from Philips, Ikea and Xiaomi.
A few days ago after a reboot of my server running both Home Assistant and Deconz, all the lights became unavailable in HA. All the switches and sensors are showing fine and controllable from HA.

Everything is ok in the Phoscon APP as I can control the lights from there.
The integration between HA and Deconz is working at least some since the switches and sensors are available in HA.
It is possible that HA was upgraded before the reboot. I’m running the latest 0.109.9 right now.

I don’t know how to troubleshoot this issue further.

home-assistant.log says this for each light:
WARNING (MainThread) [homeassistant.helpers.service] Unable to find referenced entities light.kitchen_diskbenk

Any ideas of what might have happened and how to fix this issue?