I have checked the logs and dont see anything obvious, I am getting the following output in terminal:
Changing monitoring state from 'Operational' to 'Closed'
Connecting to: /dev/ttyACM0
Changing monitoring state from 'Offline' to 'Opening serial port'
Connected to: Serial(port='/dev/ttyACM0', baudrate=250000, bytesize=8, parity='N', stopbits=1, timeout=15.0, xonxoff=False, rtscts=False, dsrdtr=False), starting monitor
Changing monitoring state from 'Opening serial port' to 'Connecting'
Send: N0 M110 N0*125
Recv: echo:Unknown command: ""
Recv: ok
Changing monitoring state from 'Connecting' to 'Operational'
Send: N0 M110 N0*125
Connection closed, closing down monitor
Recv: echo:Unknown com��"��
Changing monitoring state from 'Operational' to 'Printing'
Communication timeout while printing, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Send: N1 M21*17
Recv: echo:SD card ok
Communication timeout while printing, trying to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Send: N2 M105*37
Recv: ok T:23.4 /0.0 B��"��{�Y^ok T
Send: N0 M110 N0*125