问IBM-Watson文本到语音API:方法失败，状态代码403:禁用

EN

import json
from os.path import join, dirname
from ibm_watson import TextToSpeechV1
from ibm_watson.websocket import SynthesizeCallback
from ibm_cloud_sdk_core.authenticators import IAMAuthenticator
from ibm_watson import ApiException

apikey = 'XXXXXXXXXXXXXX'
url = 'https://stream.watsonplatform.net/text-to-speech/api'
try:
    authenticator = IAMAuthenticator(apikey)
    service = TextToSpeechV1(authenticator=authenticator)
    service.set_service_url(url)

    voices = service.list_voices().get_result()
    print(json.dumps(voices, indent=2))
except ApiException as ex:
    print("Method failed with status code " + str(ex.code) + ": " + ex.message)