New 2023 Spotify Plugin

Hi. I am a long time volumio user, and I am having an issue with version 4.1.4 of the spotify plugin. My volumio installation is up to date and running on a pi 5.
The problem is that I can’t skip to the next track on spotify. If I ssh on to my pi and run /usr/local/bin/volumio next I get a “next Sucess” message, but if I look in the logs I get

---------------------------- Client requests Volumio next
info: CoreCommandRouter::volumioNext
info: CoreStateMachine::next
info: Spotify next
info: Sending Spotify command to local API: /player/next
error: Failed to send command to Spotify local API: /player/next: Error: Bad Request

All other operations work fine as far as I can tell (skip to previous, pause, volume etc).
Is there anything else I can look at to help to debug the problem? Thanks