This is the error i am getting when trying to configure the sound in MMM-GoogleAssistant

Using default output speaker for playing
play WARN alsa: can’t encode 0-bit Unknown or not applicable
utils.sh: line 296: 13313 Floating point exceptionplay $audiofile
Output device error ! (default speaker not set)
Did you hear yourself? [Y/n]
utils.sh: line 171: 13314 Floating point exceptionplay beep_check.wav 2> /dev/null

I someone able to advise please - many thanks