Alexa_media_player: notification service errors "required key not provided @ data['message']

I am using the alexa_media_player integration. It is connected successfully and I can control media etc.

However I cant get the notify.alexa_media service to work. It keeps throwing the error

“required key not provided @ data[‘message’]”

following the example at “” I am using the following from the services menu within hass.

    type: tts
    - media_player.brian_s_echo
  message: 'Ding-dong. Someone is at the door.'

the full error output is

Sat Dec 21 2019 12:04:12 GMT-0800 (Pacific Standard Time)
required key not provided @ data['message']
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/", line 133, in handle_call_service
  File "/usr/src/homeassistant/homeassistant/", line 1213, in async_call
    processed_data = handler.schema(service_data)
  File "/usr/local/lib/python3.7/site-packages/voluptuous/", line 272, in __call__
    return self._compiled([], data)
  File "/usr/local/lib/python3.7/site-packages/voluptuous/", line 594, in validate_dict
    return base_validate(path, iteritems(data), out)
  File "/usr/local/lib/python3.7/site-packages/voluptuous/", line 432, in validate_mapping
    raise er.MultipleInvalid(errors)
voluptuous.error.MultipleInvalid: required key not provided @ data['message']

Does anyone have any ideas? I feel like I am doing something simple wrong in formatting the request

hai risolto? ho lo stesso problema