我在我的网站中发现此错误未定义mysqli_stmt :: get_result（）错误

I currently hosted my side on linux server on godaddy and I got this error "undefined mysqli_stmt::get_result()".

My server has already installed mysqlnd and get_result is also enabled. This is my code where I got the error:

<?php 
require_once('inc/db.php');
date_default_timezone_set("Asia/Kolkata");
require_once 'inc/functions.php';
ob_start();
session_start();
  //site settings
   $setting_query = $db_con->prepare("SELECT * FROM tb_settings");  
   $setting_query->execute();
   $setting_result = $setting_query->get_result(); //Here, I got the error
   $settings = $setting_result->num_rows;
   if($settings>0){
       $site_data = $setting_result->fetch_assoc();
       $site_name = $site_data['site_name'];
   } ?>

Please help me..