Sonos UPnP Error

Does anyone have any idea what mite be causing the following error?

2017-07-27 20:00:24 ERROR (Thread-10) [soco.services] UPnP Error 801 received:  from 192.168.200.200
Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.4/site-packages/soco/services.py", line 408, in send_command
    self.handle_upnp_error(response.text)
  File "/srv/homeassistant/lib/python3.4/site-packages/soco/services.py", line 469, in handle_upnp_error
    error_xml=xml_error
soco.exceptions.SoCoUPnPException: UPnP Error 801 received:  from 192.168.200.200