if ( false === $result ) { // if the database didn't save, it's still an error.
                    $this->sfwp_transients->set( $cachekey, $post_data, $this->wordpress->options['cache_expiration'] );
                    if ( '' !== $cachekey ) {
                        $url = esc_url_raw( $post_data['redirect_url_error'] ) . '&mapping_error_transient=' . $cachekey;
                    }