Failed to call service ga/join. Service not found.

[spencerthayer]

I am getting the following error, Failed to call service ga/join. Service not found., when I am trying to add media_player.google_in_bedroom to group play.

type: custom:mini-media-player
name: Bedroom Sleep Modes
entity: media_player.bedroom
speaker_group:
  platform: ga
  show_group_count: true
  entities:
    - entity_id: media_player.bedroom
      name: Bedroom
    - entity_id: media_player.google_in_bedroom
      name: Google in Bedroom
shortcuts:
  columns: 2
  buttons:
    - name: Rain
      type: music
      id: https://rainyday-mynoise.radioca.st/stream
    - name: Rain Mix
      type: music
      id: http://94.23.252.14:8067/stream
    - name: Ambient Nature
      type: music
      id: http://larry.torontocast.com:1540/stream/1/
    - name: Ambient Sleeping Pill
      type: music
      id: https://radio.stereoscenic.com/asp-s
    - name: Planet Ambient Radio
      type: music
      id: https://planetambi.radioca.st/stream
    - name: Zero Beat
      type: music
      id: http://62.149.196.16:8800/stream/1/
    - name: Aromatherapy
      type: music
      id: http://23.82.11.87:27028/stream
    - name: White Noise
      type: music
      id: http://96.31.83.94:8045/stream/1/
    - name: Pink Noise
      type: music
      id: http://uk1.internet-radio.com:8004/stream
    - name: Brown Noise
      type: music
      id: http://uk1.internet-radio.com:8280/stream
volume_stateless: false
replace_mute: stop
info: scroll
source: full
sound_mode: full
artwork: cover
volume_step: '1'

[kalkih]

The Home Assistant Google Cast intergration doesn't support speaker group management.

Known supported/working platforms are listed under supported platforms here.

[thor9898]

@kalkih Isn't there any option to have something like the group card, but for google speakers? I use the youtube music integration and I really need a easy way to select the speaker I want, and the Card with media shortcuts is not doing it for me. Because there is no way to have a dropdown menu to select the speaker, is there?

[bonstio]

Same issue.