Fatal error: Uncaught mysqli_sql_exception: Unknown database 'ujian_sekolah' in C:\xampp\htdocs\ujian\config.php:12 Stack trace: #0 C:\xampp\htdocs\ujian\config.php(12): mysqli_select_db(Object(mysqli), 'ujian_sekolah') #1 C:\xampp\htdocs\ujian\index.php(6): require_once('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\ujian\config.php on line 12