Fatal error: Uncaught mysqli_sql_exception: No connection could be made because the target machine actively refused it in C:\xampp\htdocs\staff\conn.php:4 Stack trace: #0 C:\xampp\htdocs\staff\conn.php(4): mysqli_connect('localhost', 'root', Object(SensitiveParameterValue), 'staff') #1 C:\xampp\htdocs\staff\index.php(2): require_once('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\staff\conn.php on line 4