Fatal error: Uncaught Error: Class 'DB' not found in D:\xampp\htdocs\xe\classes\db\DBMysql.class.php:14 Stack trace: #0 D:\xampp\htdocs\xe\classes\db\DBMysqli_innodb.class.php(4): require_once() #1 {main} thrown in D:\xampp\htdocs\xe\classes\db\DBMysql.class.php on line 14