Mini-media-player, spotify not working

I’m new to this stuff, so I’m sure it’s something stupid but…

Listening to the radio is no problem, but playing the playlist of spotify doesn’t work.
And yes, I did the integration of spotify : when playing spotify on the website of spotify it shows on the media control card :

name: Chromecast Audio Living
group: false
hide:
  volume: false
shortcuts:
  columns: 3
  buttons:
    - name: Radio 2 W-Vl
      icon: null
      type: music
      id: http://icecast.vrtcdn.be/ra2wvl-high.mp3
    - name: Joe
      icon: null
      type: music
      id: https://20723.live.streamtheworld.com/JOE.mp3
    - name: MnM
      icon: null
      type: music
      id: http://icecast.vrtcdn.be/mnm-high.mp3
    - name: Playlist 1
      type: playlist
      id: >-
        spotify:user:xxx:playlist:5Hhy6aY14moTgmI146oVcC?si=7d81567306824658
    - name: Playlist 2
      type: playlist
      id: >-
        spotify:user:xxx:playlist:1T9A026P65S3k335NTTfCy?si=eacbbc8d019c4873
type: custom:mini-media-player
entity: media_player.chromecastaudioliving