Error template: Unable to find service notify/echo_dot_di_nicola

1

Since some days i get this error:

Error executing script: Unable to find service notify/echo_dot_di_nicola

the automation is:

- id: Parla_alexa
  alias: Parla Alexa da Mqtt
  trigger:
  - platform: mqtt
    topic: parla_alexa/+
  action:
  - data_template:
      message: '{{ trigger.payload }}'
      data:
        type: tts
        method: speak
    service_template: notify.{{ trigger.topic.split('/')[-1] }}

the topic is

parla_alexa/echo_dot_di_nicola

two days ago it worked perfectly, I can’t understand what happened.

Yesterday I tried to create and run a Python_script but is the same error:

hass.services.call('notify', 'echo_dot_di_nicola', {'message': 'messaggio', 'data':{'type':'tts', 'method':'speak'}})

thank you all