Fixing query.

main/inc/lib/userportal.lib.php

@@ -441,7 +441,7 @@ class IndexManager {
 	                LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code $platform_visible_courses)
 	                INNER JOIN $tbl_url_rel_course as url_rel_course
 	                    ON (url_rel_course.course_code=t3.code)
-	                WHERE access_url_id = $url_access_id AND t1.parent_id ".(empty($category) ? "IS NULL" : "='$category'")."
+	                WHERE url_rel_course.access_url_id = $url_access_id AND t1.parent_id ".(empty($category) ? "IS NULL" : "='$category'")."
 	                GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
 			}
 		}