I have a Sonos Play 3 running v9.3 (build 47259120) from a MacBook Pro w/Mojave 10.14.2 and iOS 12. Neither device is able to save a Sonos playlist. My music is sourced from Spotify.
The recent diagnostic I ran is 1815068424.
Any thoughts on why Sonos would not let me save a playlist? How should I resolve this?