if ( false === $filesystem->put_contents( $this->path . '/' . self::FULLCHAIN_NAME, implode( "\n", $certs ) ) ) {
                return new WP_Error( 'new_cert_cannot_write_fullchain', sprintf( __( 'Could not write certificates to file <code>%s</code>. Please check your filesystem permissions.', 'wp-encrypt' ), $this->path . '/' . self::FULLCHAIN_NAME ) );
            }