Fatal error: Uncaught mysqli_sql_exception: Access denied for user 'tutorial'@'localhost' (using password: NO) in C:\xampp\htdocs\Formular\index.php:7 Stack trace: #0 C:\xampp\htdocs\Formular\index.php(7): mysqli->__construct('localhost', 'tutorial', Object(SensitiveParameterValue), 'tutorial') #1 {main} thrown in C:\xampp\htdocs\Formular\index.php on line 7