Exception in thread "main" org.json.JSONException: A JSONObject text must begin with '{' at 1 [character 2 line 1]

package com.example.demo.moduls;
 
import org.json.JSONArray;
import org.json.JSONObject;
 
import java.io.*;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
 
public class Apiegrn {
    static String json;
    public String run() throws IOException {
        URL url = null;
        try {
            url = new URL("https://apiegrn.ru/api/cadaster/search");
        } catch (MalformedURLException e) {
            throw new RuntimeException(e);
        }
        HttpURLConnection http = (HttpURLConnection)url.openConnection();
        http.setRequestMethod("POST");
        http.setDoOutput(true);
        http.setRequestProperty("Token", "");
        http.setRequestProperty("Content-Type", "application/json");
 
        String data = "{\n    \"query\": \"Курск, Косухина 38, кв 19\",\n \"grouped\": 0\n}";
 
        byte[] out = data.getBytes(StandardCharsets.UTF_8);
        
       
        OutputStream stream = http.getOutputStream();
        stream.write(out);
        json=http.getResponseMessage();
        JSONObject obj = new JSONObject(json);
        JSONArray arr = obj.getJSONArray("objects");
        for(int i = 0; i < arr.length(); i++) {
            String cad = arr.getJSONObject(i).getString("CADNOMER");
            System.out.println(cad);
        }
        String result;
        InputStream inputStream=http.getInputStream();
        System.out.println(http.getResponseCode() + " " + http.getResponseMessage());
        try (final BufferedReader in = new BufferedReader(new InputStreamReader(http.getInputStream()))) {
            String inputLine;
            final StringBuilder content = new StringBuilder();
            while ((inputLine = in.readLine()) != null) {
                content.append(inputLine);
            }
            System.out.println(content.toString());
            return content.toString();
        } catch (final Exception ex) {
            ex.printStackTrace();
            return "";
        }
    }
 
        /*      http.disconnect();*/
    }