Python I'；我在谷歌合成语音时出错了'；s文本语音转换API

我不知道为什么在响应以下代码时会出现此错误

# imports
from google.cloud import texttospeech_v1beta1 as texttospeech

AUDIO_PROCESS_ROOT = 'path_audio'  
VEL_NORMAL = 1.0
KEY_API_ROOT = 'path_key'

# set credentials environment
os.environ["GOOGLE_APPLICATION_CREDENTIALS"]=KEY_API_ROOT+"nome.json"

def TextToSpeech(text):

 client = texttospeech.TextToSpeechClient()
 input_text = texttospeech.types.SynthesisInput(text=text)
 voice = texttospeech.types.VoiceSelectionParams(language_code='en-US', name='en-US-Wavenet- B',ssml_gender=texttospeech.enums.SsmlVoiceGender.MALE)

 #speaking_rate --> responsavel pela taxa de velocidade no intervalo de [0.25 a 4.0], sendo 1.0 a velocidade normal padrão

 audio_config = texttospeech.types.AudioConfig(audio_encoding=texttospeech.enums.AudioEnc oding.MP3, speaking_rate=VEL_NORMAL)
 response = client.synthesize_speech(input_text, voice,audio_config)

 with open(AUDIO_PROCESS_ROOT+'audio_normal.mp3', 'wb') as out:
     out.write(response.audio_content)

TextToSpeech("Hi, how are you")

错误：

RetryError（调用时超过600.0s的u'截止日期'

---

是否为项目启用了文本到语音API？或者，如果您只是在本地运行，是否设置了应用程序默认凭据？可能是您没有正确的权限，对文本到语音API的请求正在超时

我能够在App Engine上实现以下功能：

在

app.yaml

中：

runtime: python37

在

requirements.txt

中：

flask
google-cloud-texttospeech

在

main.py

中：

from flask import Flask, Response
from google.cloud import texttospeech

app = Flask(__name__)

@app.route("/")
def hello():
    client = texttospeech.TextToSpeechClient()
    input_text = texttospeech.types.SynthesisInput(text="Hi, what's up")

    voice = texttospeech.types.VoiceSelectionParams(
        language_code="en-US",
        ssml_gender=texttospeech.enums.SsmlVoiceGender.MALE,
    )

    audio_config = texttospeech.types.AudioConfig(
        audio_encoding=texttospeech.enums.AudioEncoding.MP3
    )

    response = client.synthesize_speech(input_text, voice, audio_config)
    return Response(response.audio_content, mimetype='audio/mp3')

---

请将错误以文本形式而不是图像形式发布好的，我认为图片会更好。将错误以文本形式发布，以便其他用户可以复制它是一种很好的做法。这也提高了可读性。非常好，非常有意义，谢谢！您还有其他例外吗？似乎缺少部分。令人惊讶的是，API工作得非常完美我没有对代码进行任何更改。是的，服务已启用，凭据已设置。您能否在问题中包含更多关于如何使用API的代码？