Fatal error: Uncaught mysqli_sql_exception: Unknown database 'yugioh' in E:\xampp\htdocs\yugioh\cards.php:8 Stack trace: #0 E:\xampp\htdocs\yugioh\cards.php(8): mysqli->__construct('localhost', 'root', Object(SensitiveParameterValue), 'yugioh') #1 {main} thrown in E:\xampp\htdocs\yugioh\cards.php on line 8