使用Google People API时遇到错误203

Question

Google People API允许阅读和管理联系人。我尝试执行一个允许我获取的代码，但是，我得到错误203.这是我的代码

QUrl url("https://people.googleapis.com/v1/{resourceName=people/me}/connections");
url.addQueryItem("pageToken", nextPageToken);

QNetworkRequest* request = new QNetworkRequest( url );
request->setHeader( QNetworkRequest::ContentTypeHeader, "application/json" );
request->setRawHeader( "Authorization", QString( "Bearer %1" ).arg( this->_oAuth2->token() ).toLatin1() );

return this->m_networkManager->get(*request);

然而，我得到错误203。 我做错了什么？。