Once again it appears that Sonos has lost connectivity to my music server. I use the Sonos bridge together with a Sonos 5 player and multiple Sonos player apps on PC, Android and the Sonos controller.
Along with not being able to see album art, clicking play on either my Sonos controller or in the Sonos PC app results in a notification to the effect of "Unable to play '<music title>' - cannot connect to //<myserver>/<share> because the server cannot be found."
I'm getting pretty tired and angry about doing the routine to shutting down all devices including my router and then restarting in the order of router, bridge, Sonos 5 device.
I've submitted diagnostic log 4072501.