Missing Controller

Error: Pgsql502Controller could not be found.

Error: Create the class Pgsql502Controller below in file: app/controllers/pgsql502_controller.php

<?php
class Pgsql502Controller extends AppController {

	var $name = 'Pgsql502';
}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_controller.ctp