The Google Ads API error message "RefreshError: ('unauthorizedclient: Unauthorized', {'error': 'unauthorizedclient', 'error_description': 'Unauthorized'})" means that the client applying for authorization has not provided sufficient or valid credentials to Google Ads API. The error indicates that the authorization process has failed and the access token cannot be refreshed. The credentials may be invalid or have expired or the client may not have the necessary permissions to access the requested resource. To resolve this error, the client should ensure that they have provided valid and up-to-date authorization credentials and have the necessary access permissions.
