Fatal error: Uncaught mysqli_sql_exception: Unknown database 'wadi1' in C:\xampp\htdocs\RivalApp\Apps\z_db.php:2 Stack trace: #0 C:\xampp\htdocs\RivalApp\Apps\z_db.php(2): mysqli->__construct('localhost', 'root', Object(SensitiveParameterValue), 'wadi1') #1 C:\xampp\htdocs\RivalApp\Apps\header.php(1): include('C:\\xampp\\htdocs...') #2 C:\xampp\htdocs\RivalApp\Apps\index.php(1): include('C:\\xampp\\htdocs...') #3 {main} thrown in C:\xampp\htdocs\RivalApp\Apps\z_db.php on line 2