Fatal error: Uncaught mysqli_sql_exception: Host 'sdpos' is not allowed to connect to this MariaDB server in C:\xampp\htdocs\sdpos\connection.php:9 Stack trace: #0 C:\xampp\htdocs\sdpos\connection.php(9): mysqli->__construct('sdpos.co.uk', 'Any', Object(SensitiveParameterValue), 'main_db') #1 C:\xampp\htdocs\sdpos\register.php(3): include('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\sdpos\connection.php on line 9