Adwords API - AuthorizationError.USER_PERMISSION_DENIED - Python

我正在尝试使用Google Adwords Test API . 我正在尝试连接到Google Adwords API，但我一直收到以下错误消息：

googleads.errors.GoogleAdsServerFault: [InternalApiError.UNEXPECTED_INTERNAL_API_ERROR @ com.google.ads.api.services.common.error.InternalApiError.<init>(InternalApiErro]

然后，我创建了一个Google Adwords Manager测试帐户，并设法获得了一个Oauth客户端ID和Secret Id . 然后我使用Google Oauth 2.0 playground来获取刷新令牌 . 我的google_adwords.yaml文件现在看起来像这样：

# AdWordsClient configurations
adwords:
  #############################################################################
  # Required Fields                                                           #
  #############################################################################
  developer_token: **DEVELOPER TOKEN FROM PRODUCTION ACCOUNT PASTED HERE**
  #############################################################################
  # Optional Fields                                                           #
  #############################################################################
  client_customer_id: **CLIENT CUSTOMER ID FROM MANAGER TEST ACCOUNT PASTED HERE** 
  # user_agent: INSERT_USER_AGENT_HERE
  # partial_failure: True
  # validate_only: True
  #############################################################################
  # OAuth2 Configuration                                                      #
  # Below you may provide credentials for either the installed application or #
  # service account flows. Remove or comment the lines for the flow you're    #
  # not using.                                                                #
  #############################################################################
  # The following values configure the client for the installed application
  # flow.
  client_id: **CLIENT ID FROM MANAGER TEST ACCOUNT PASTED HERE** 
  client_secret: **CLIENT CUSTOMER SECRET FROM MANAGER TEST ACCOUNT PASTED HERE** 
  refresh_token: **REFRESH TOKEN FROM OAUTH PLAYGROUND ON BEHALF OF MANAGER TEST ACCOUNT PASTED HERE** 
  # The following values configure the client for the service account flow.
  # path_to_private_key_file: INSERT_PATH_TO_JSON_KEY_FILE_HERE
  # delegated_account: INSERT_DOMAIN_WIDE_DELEGATION_ACCOUNT
  #############################################################################
  # ReportDownloader Headers                                                  #
  # Below you may specify boolean values for optional headers that will be    #
  # applied to all requests made by the ReportDownloader utility by default.  #
  #############################################################################
  # report_downloader_headers:
    # skip_report_header: False
    # skip_column_header: False
    # skip_report_summary: False
    # use_raw_enum_values: False

我的Python代码看起来像这样：

# -*- coding: utf-8 -*-
from googleads import adwords

adwords_client = adwords.AdWordsClient.LoadFromStorage('C:\Python36\google_adwords.yaml')
ad_group_service = adwords_client.GetService('TargetingIdeaService', version='v201802')

selector = {
    'ideaType': 'KEYWORD',
    'requestType': 'IDEAS'
}
page = ad_group_service.get(selector)

print (page)

有谁知道我哪里出错了？我认为我的YAML文件有问题，但不能完全放置它的位置 . 提前致谢！