- 오류

Notice: Undefined variable: course_course in /volume1/web/wordpress/wp-content/plugins/wplms-front-end/includes/class_wplms_front_end.php on line 90

    function wplms_front_end_validate_action(){
        $create_course = vibe_get_option('create_course');
 90번째줄       if(isset($_GET['action']) && is_page($course_course)){
            if(is_numeric($_GET['action']) && (get_post_type($_GET['action']) == 'course')){
                if ( current_user_can('edit_post', $_GET['action']) ){
                   
                }else {
                    wp_die(__('Unable to edit Course, please contact Site Administrator','wplms-front-end'));
                }   
            }else{
                wp_die(__('Incorrect Action, please contact Site Administrator','wplms-front-end'));
            }
        }
    }

-------------------------------------------------------------------------------------------

오류랑 .. 오류출력된 파일의 관련줄 올립니다.. ㅜㅜ