Vimar Dimmer Smart

There is something non-standard in this deviece, and the stock driver is throwing an exception ...
You can try to first delete the device (use the red 'REMOVE DEVICE' button at the bottom of the web page), and then pair it again - very close to the HE hub!

But before doing this, can you try this driver ?
[RE-RELEASE][BETA] Tuya Zigbee Dimmer Module (w/ healthStatus)

Enable the 'Advanced Options' and select Profile: "OTHER_OEM_DIMMER"