wordpress-preseed/wp-content/plugins/all-in-one-event-calendar/app/config/exception.php

<?php
/**
 * This exception is thrown when no constant function is found.
 *
 * @author     Time.ly Network Inc.
 * @since      2.0
 *
 * @package    AI1EC
 * @subpackage AI1EC.Config
 */
class Ai1ec_Constants_Not_Set_Exception extends Ai1ec_Exception {
}