Zigbee Dimmer woes

I’m trying to add these dimmers via Zigbee2MQTT (Edge) but get these error messages (once added) and although I can turn the lights on/off, I cannot adjust the dimming:

Any tips, please?

to add to this, i’m using the CC2652R

Best place for z2m support is Issues · Koenkk/zigbee2mqtt · GitHub.

Could you please click on the device, and under ‘About’ there should be a Zigbee Manufacturer string. What is it?