Fatal error: Uncaught mysqli_sql_exception: Unknown database 'hotel' in D:\xampp\htdocs\_0\06_Hotel\Hotel Management System in PHP\Hotel\db.php:2 Stack trace: #0 D:\xampp\htdocs\_0\06_Hotel\Hotel Management System in PHP\Hotel\db.php(2): mysqli_connect('localhost', 'root', '', 'hotel') #1 D:\xampp\htdocs\_0\06_Hotel\Hotel Management System in PHP\Hotel\index.php(2): include('D:\\xampp\\htdocs...') #2 {main} thrown in D:\xampp\htdocs\_0\06_Hotel\Hotel Management System in PHP\Hotel\db.php on line 2