Сервер не понимает как отдать данные запросу

public static String executeGet(String targetURL) {
        HttpURLConnection connection = null;
 
        try {
            //Create connection
            URL url = new URL(targetURL);
            String proxy = "192.168.211.209";
            Integer port = 8080;
 
            connection = (HttpURLConnection) url.openConnection();
 
            connection.setDoOutput(true);
            connection.setRequestMethod("GET");
            String auth = "****:*****" ;
            String basicAuth = "Basic " + new String(Base64.getEncoder().encode(auth.getBytes()));
            connection.setRequestProperty ("Authorization", basicAuth);
            connection.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.174 YaBrowser/22.1.4.837 Yowser/2.5 Safari/537.36");
            connection.setRequestProperty("Proxy-Connection", "keep-alive");
            connection.setRequestProperty("Upgrade-Insecure-Requests", "1");
            connection.setRequestProperty("Cache-Control", "max-age=0");
            connection.setRequestProperty("Accept-Language", "ru,en;q=0.9");
            connection.setRequestProperty("Accept-Encoding", "gzip, deflate");
            connection.setRequestProperty("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9");
            //connection.setRequestProperty("Host", "192.168.211.86:8700");
            //connection.setRequestProperty("Accept", "*/*");
            //connection.setRequestProperty("Accept-Encoding", "gzip, deflate, br");
            //connection.setRequestProperty("Connection", "keep-alive");
 
            //Send request
            DataOutputStream wr = new DataOutputStream (
                    connection.getOutputStream());
            wr.close();
 
            //Get Response
            InputStream is = connection.getInputStream();
            BufferedReader rd = new BufferedReader(new InputStreamReader(is));
            StringBuilder response = new StringBuilder(); // or StringBuffer if Java version 5+
            String line;
            while ((line = rd.readLine()) != null) {
                response.append(line);
                response.append('\r');
            }
            rd.close();
            return response.toString();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            if (connection != null) {
                connection.disconnect();
            }
        }
    }