chamilo-lms/plugin/buycourses/src/error.php

<?php
/* For license terms, see /license.txt */
/**
 * Errors management for the Buy Courses plugin - Redirects to course_catalog.php
 * @package chamilo.plugin.buycourses
 */
/**
 * Config
 */
unset($_SESSION['bc_sale_id']);

header('Location: course_catalog.php');