Error when trying to reproduce a text within HA to Volumio

Configuration
,
1

Hi, I have installed the Volumio media player and I am trying to send it a text to play. When I try this both from a HA automation and with nodered it always fails with the error:

"Expecting value: line 1 column 1 (char 0)".

configuration.yaml
tts:
  - platform: google_translate
    language: 'es'
    cache: true
    cache_dir: /tmp/tts
    time_memory: 300
    service_name: google_say

Automation code

alias: TTS_Ejemplo
description: ""
trigger:
  - platform: time
    at: "20:40:00"
condition: []
action:
  - service: tts.google_say
    data:
      cache: false
      entity_id: media_player.volumio_control
      message: Ya funciona
mode: single

I don’t know what the problem could be.

Thanks