Fatal error: Uncaught mysqli_sql_exception: Unknown database 'my_website_db' in C:\xampp\htdocs\TH-MR\db_connect.php:7 Stack trace: #0 C:\xampp\htdocs\TH-MR\db_connect.php(7): mysqli->__construct('localhost', 'root', Object(SensitiveParameterValue), 'my_website_db') #1 C:\xampp\htdocs\TH-MR\register.php(2): require_once('C:\\xampp\\htdocs...') #2 {main} thrown in C:\xampp\htdocs\TH-MR\db_connect.php on line 7