Fatal error: Uncaught mysqli_sql_exception: Unknown database 'admin' in C:\xampp\htdocs\core\config.php:42 Stack trace: #0 C:\xampp\htdocs\core\config.php(42): mysqli_connect('localhost', 'root', Object(SensitiveParameterValue), 'admin') #1 C:\xampp\htdocs\index.php(2): require_once('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\core\config.php on line 42