Error[ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client

Here ,I am making an array of objects data2[] and iterating over this array sending each of its objects , I got 1 response in the postman when I checked it , but not others because of this error .

const express = require("express")
const getOrganicData = require('../GoogleSearchScraping/organicData')
const url = require('url');
const router = new express.Router()

router.get('/searchExtended' , async (req, res) =>
{
 try {
      const queryObject = url.parse(req.url , true).query
      console.log("Query is "+queryObject.query);
      const data = await getOrganicData(queryObject.query)
      const organicData = data[0]
      const snippet = data[1]
      const htmlSnippet = data[2]
      const data2 = new Array(data[0].length)
        for (let i = 0; i < data2.length; i++) 
         {
          data2[i] = 
          {
          organicData: organicData[i],
          snippet: snippet[i],
          htmlSnippet: htmlSnippet[i],
          Rank: ""+(i+1)+""   
          }    
         }

        for (let i = 0; i < data2.length; i++) 
         {
          res.status(201).send(Object.values(data2[i]))
         }
    
     }
 catch (error) {
    res.status(400).send('Error '+error)
   }
})

module.exports = router ;