Nestmini connection Home Assistant cannot automatically play mp3

I have a google nest mini

I want to use it with Mijia wireless switch as a doorbell

The automated yaml :

alias: doorbell
description: ''
  - platform: device
    type: turned_on
    device_id: 8c03eb1d696db91b0846c52edfc81702
    entity_id: switch.outlet
    domain: switch
condition: []
  - service: media_player.turn_on
    data: {}
    entity_id: media_player.la_ba
  - service: media_player.play_media
      media_content_id: /media/cdrom/555.mp3
      media_content_type: music
    entity_id: media_player.la_ba
mode: single

Because I haven’t bought a wireless switch yet

Test with socket first

The corresponding mp3 has been put in media/cdrom
But no music was played when triggered

Make sure the speaker can be played ((I can directly play mp3 through the speaker in Home Assistant

What can i do?