Hi, recently I bought a couple of Hama zigbee radiator thermostats (Link). I connected them to home assistant using ZHA. I restarted my home assistant instance and it stopped working. I checked my logbook and i saw this 
I tried readding them and it helped. But as soon as I restarted home assistant it happened again. Any ideas how to fix that?
(UPDATE: After 40 minutes it connected and I can set the temperature.)