Error starting multiroom playback functionality

Hi,

I just upgraded to Volumio 3 and also upgraded my plan to Premium in order to use multiroom playback. But whenever I try to enable the Multiroom playback functionality, the UI shows an alsa error, and the plugin won’t enable. I’m not able to playback any audio untill I once again disable the functionality.

http://logs.volumio.org/volumio/3aUve9J.html