getUrl() ERROR

                    try {
                        $feed_img_url = $feed_item->getImageVersions2()->candidates[0]->getUrl()."\n";
                        $img = "results/".$feed_id_str."/".$feed_id_str.".jpeg";
                        file_put_contents($img, file_get_contents($feed_img_url));
                    } catch (Exception $e) {
                        echo $e->getCode();
                    }