I am new to Elastic search and node js. I have configured ELK in my PC successfully. I have done basic queries using dev tools in kibana. Also I invoked search method from postman. Everything is working fine. But when I am trying to integrate elastic search in nodejs application, the request to elastic search is getting failed and nothing is returned.
Here is small snippet

const fetchElasticData = async () => {
try {
    if (client.transport.connectionPool) {
      console.log("Elasticsearch client is connected.");
    } else {
      console.log("Elasticsearch client is not connected.");
    }       
    const { body: response } = await client.search({
      index: "mongodb-data",
      body: {
        query: {
          match_all: {},
        },
      },
    });
    console.log("Response :" + response);
    console.log(response.hits.hits);
  } catch (error) {
    console.error("Error searching Elasticsearch:", error);    
  }
};
fetchElasticData()

When I am trying to run this, I am getting output as follows:

G:server> npm start

> [email protected] start
> node server.js

Elasticsearch client is connected.   
Response :undefined
Error searching Elasticsearch: TypeError: Cannot read properties of undefined (reading 'hits')
    at fetchElasticData1 (G:servercontrollerssms_Controller.js:237:26)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

I want to know where I am missing. Your help is highly appreciated. Thanks in advance!!