AWS Elasticsearch返回无活动连接

如何解决AWS Elasticsearch返回无活动连接

大家好，我使用AWS-Elasticsearch服务，并使用Lambda访问它。当我尝试从Lambda连接elasticsearch时会引发错误

{ Error: No Living connections
    at sendReqWithConnection (/var/task/node_modules/elasticsearch/src/lib/transport.js:226:15)
    at next (/var/task/node_modules/elasticsearch/src/lib/connection_pool.js:214:7)
    at /var/task/node_modules/async-listener/glue.js:188:31
    at process._tickCallback (internal/process/next_tick.js:61:11)
  message: 'No Living connections',body: undefined,status: undefined }

我正在使用Nodejs连接es域

const elasticsearch = require('elasticsearch');
const httpAwsEs = require('http-aws-es');
const AWS = require('aws-sdk');

const esClient = new elasticsearch.Client({
  host: 'endpointAddress',connectionClass: httpAwsEs,httpAuth: 'userName:Passwod',amazones: {
    region: 'us-east-1',credentials: new AWS.EnvironmentCredentials('AWS')
  }
});

module.exports = esClient;

我在另一个运行良好的帐户上进行了测试，这是什么问题， 感谢您的阅读。