Volumio Premium Mutliroom Not Working

I’m trying to setup Mutliroom, but the plugin is failing. When I reboot Volumio gives me an error saying “This plugin is failing to start. Please install updated version or contact plugin developer.”
I’m running Volumio 3.449.

@DED please have a look

Hello!

Multiroom doesn’t need any plugin
you need only premium plan and multiple volumio devices placed on the same network

For further infos/issues about premium features please raise a ticket on our dedicated HELP DESK

thanks
Davide
VOLUMIO TECH SUPPORT