a xmlrpc method
	 *
	 * @param array $methods The list of methods to be filtered.
	 * @return array $methods
	 */
	public static function jetpack_xmlrpc_methods( $methods ) {
		$methods['jetpack.getHeartbeatData'] = array( __CLASS__, 'xmlrpc_data_response' );
		return $methods;
	}

	/**
	 * Handles the response for the jetpack.getHeartbeatData xmlrpc method
	 *
	 * @param array $params The parameters received in the request.
	 * @return array $params all the stats that heartbeat handles.
	 */
	public static function xmlrpc_data_response( $params = array() ) {
		// The WordPress XML-RPC server sets a default param of array()
		// if no argument is passed on the request and the method handlers get this array in $params.
		// generate_stats_array() needs a string as first argument.
		$params = empty( $params ) ? '' : $params;
		return self::generate_stats_array( $params );
	}

	/**
	 * Clear scheduled events
	 *
	 * @return void
	 */
	public function deactivate() {
		// Deal with the old pre-3.0 weekly one.
		$timestamp = wp_next_scheduled( 'jetpack_heartbeat' );
		if ( $timestamp ) {
			wp_unschedule_event( $timestamp, 'jetpack_heartbeat' );
		}

		$timestamp = wp_next_scheduled( $this->cron_name );
		wp_unschedule_event( $timestamp, $this->cron_name );
	}

	/**
	 * Interact with the Heartbeat
	 *
	 * ## OPTIONS
	 *
	 * inspect (default): Gets the list of data that is going to be sent in the heartbeat and the date/time of the last heartbeat
	 *
	 * @param array $args Arguments passed via CLI.
	 *
	 * @return void
	 */
	public function cli_callback( $args ) {

		$allowed_args = array(
			'inspect',
		);

		if ( isset( $args[0] ) && ! in_array( $args[0], $allowed_args, true ) ) {
			/* translators: %s is a command like "prompt" */
			WP_CLI::error( sprintf( __( '%s is not a valid command.', 'jetpack-connection' ), $args[0] ) );
		}

		$stats           = self::generate_stats_array();
		$formatted_stats = array();

		foreach ( $stats as $stat_name => $bin ) {
			$formatted_stats[] = array(
				'Stat name' => $stat_name,
				'Bin'       => $bin,
			);
		}

		WP_CLI\Utils\format_items( 'table', $formatted_stats, array( 'Stat name', 'Bin' ) );

		$last_heartbeat = Jetpack_Options::get_option( 'last_heartbeat' );

		if ( $last_heartbeat ) {
			$last_date = gmdate( 'Y-m-d H:i:s', $last_heartbeat );
			/* translators: %s is the full datetime of the last heart beat e.g. 2020-01-01 12:21:23 */
			WP_CLI::line( sprintf( __( 'Last heartbeat sent at: %s', 'jetpack-connection' ), $last_date ) );
		}
	}

	/**
	 * Initialize the heartbeat REST API.
	 *
	 * @return void
	 */
	public function initialize_rest_api() {
		register_rest_route(
			'jetpack/v4',
			'/heartbeat/data',
			array(
				'methods'             => WP_REST_Server::READABLE,
				'callback'            => array( $this, 'rest_heartbeat_data' ),
				'permission_callback' => array( $this, 'rest_heartbeat_data_permission_check' ),
				'args'                => array(
					'prefix' => array(
						'description' => __( 'Prefix to add before the stats identifiers.', 'jetpack-connection' ),
						'type'        => 'string',
					),
				),
			)
		);
	}

	/**
	 * Endpoint to retrieve the heartbeat data.
	 *
	 * @param WP_REST_Request $request The request data.
	 *
	 * @since 2.7.0
	 *
	 * @return array
	 */
	public function rest_heartbeat_data( WP_REST_Request $request ) {
		return static::generate_stats_array( $request->get_param( 'prefix' ) );
	}

	/**
	 * Check permissions for the `get_heartbeat_data` endpoint.
	 *
	 * @return true|WP_Error
	 */
	public function rest_heartbeat_data_permission_check() {
		if ( current_user_can( 'jetpack_connect' ) ) {
			return true;
		}

		return Rest_Authentication::is_signed_with_blog_token()
			? true
			: new WP_Error( 'invalid_permission_heartbeat_data', REST_Connector::get_user_permissions_error_msg(), array( 'status' => rest_authorization_required_code() ) );
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'Automattic\Jetpack\Heartbeat' not found in /var/www/html/dportilho.com.br/web/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-connection/src/class-manager.php:148
Stack trace:
#0 /var/www/html/dportilho.com.br/web/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-config/src/class-config.php(266): Automattic\Jetpack\Connection\Manager::configure()
#1 /var/www/html/dportilho.com.br/web/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-config/src/class-config.php(217): Automattic\Jetpack\Config-&gt;enable_connection()
#2 /var/www/html/dportilho.com.br/web/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-config/src/class-config.php(107): Automattic\Jetpack\Config-&gt;ensure_feature('connection')
#3 /var/www/html/dportilho.com.br/web/wp-includes/class-wp-hook.php(324): Automattic\Jetpack\Config-&gt;on_plugins_loaded('')
#4 /var/www/html/dportilho.com.br/web/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters(NULL, Array)
#5 /var/www/html/dportilho in <b>/var/www/html/dportilho.com.br/web/wp-content/plugins/jetpack/jetpack_vendor/automattic/jetpack-connection/src/class-manager.php</b> on line <b>148</b><br />