in management object.
	 *
	 * @return Plugin|null
	 */
	public function get_plugin() {
		return $this->plugin;
	}

	/**
	 * Get all connected plugins information, excluding those disconnected by user.
	 * WARNING: the method cannot be called until Plugin_Storage::configure is called, which happens on plugins_loaded
	 * Even if you don't use Jetpack Config, it may be introduced later by other plugins,
	 * so please make sure not to run the method too early in the code.
	 *
	 * @return array|WP_Error
	 */
	public function get_connected_plugins() {
		$maybe_plugins = Plugin_Storage::get_all();

		if ( $maybe_plugins instanceof WP_Error ) {
			return $maybe_plugins;
		}

		return $maybe_plugins;
	}

	/**
	 * Force plugin disconnect. After its called, the plugin will not be allowed to use the connection.
	 * Note: this method does not remove any access tokens.
	 *
	 * @deprecated since 1.39.0
	 * @return bool
	 */
	public function disable_plugin() {
		return null;
	}

	/**
	 * Force plugin reconnect after user-initiated disconnect.
	 * After its called, the plugin will be allowed to use the connection again.
	 * Note: this method does not initialize access tokens.
	 *
	 * @deprecated since 1.39.0.
	 * @return bool
	 */
	public function enable_plugin() {
		return null;
	}

	/**
	 * Whether the plugin is allowed to use the connection, or it's been disconnected by user.
	 * If no plugin slug was passed into the constructor, always returns true.
	 *
	 * @deprecated 1.42.0 This method no longer has a purpose after the removal of the soft disconnect feature.
	 *
	 * @return bool
	 */
	public function is_plugin_enabled() {
		return true;
	}

	/**
	 * Perform the API request to refresh the blog token.
	 * Note that we are making this request on behalf of the Jetpack master user,
	 * given they were (most probably) the ones that registered the site at the first place.
	 *
	 * @return WP_Error|bool The result of updating the blog_token option.
	 */
	public function refresh_blog_token() {
		( new Tracking() )->record_user_event( 'restore_connection_refresh_blog_token' );

		$blog_id = \Jetpack_Options::get_option( 'id' );
		if ( ! $blog_id ) {
			return new WP_Error( 'site_not_registered', 'Site not registered.' );
		}

		$url     = sprintf(
			'%s/%s/v%s/%s',
			Constants::get_constant( 'JETPACK__WPCOM_JSON_API_BASE' ),
			'wpcom',
			'2',
			'sites/' . $blog_id . '/jetpack-refresh-blog-token'
		);
		$method  = 'POST';
		$user_id = get_current_user_id();

		$response = Client::remote_request( compact( 'url', 'method', 'user_id' ) );

		if ( is_wp_error( $response ) ) {
			return new WP_Error( 'refresh_blog_token_http_request_failed', $response->get_error_message() );
		}

		$code   = wp_remote_retrieve_response_code( $response );
		$entity = wp_remote_retrieve_body( $response );

		if ( $entity ) {
			$json = json_decode( $entity );
		} else {
			$json = false;
		}

		if ( 200 !== $code ) {
			if ( empty( $json->code ) ) {
				return new WP_Error( 'unknown', '', $code );
			}

			/* translators: Error description string. */
			$error_description = isset( $json->message ) ? sprintf( __( 'Error Details: %s', 'jetpack-connection' ), (string) $json->message ) : '';

			return new WP_Error( (string) $json->code, $error_description, $code );
		}

		if ( empty( $json->jetpack_secret ) || ! is_scalar( $json->jetpack_secret ) ) {
			return new WP_Error( 'jetpack_secret', '', $code );
		}

		Error_Handler::get_instance()->delete_all_errors();

		return $this->get_tokens()->update_blog_token( (string) $json->jetpack_secret );
	}

	/**
	 * Disconnect the user from WP.com, and initiate the reconnect process.
	 *
	 * @return bool
	 */
	public function refresh_user_token() {
		( new Tracking() )->record_user_event( 'restore_connection_refresh_user_token' );
		$this->disconnect_user( null, true, true );
		return true;
	}

	/**
	 * Fetches a signed token.
	 *
	 * @deprecated 1.24.0 Use Automattic\Jetpack\Connection\Tokens->get_signed_token() instead.
	 *
	 * @param object $token the token.
	 * @return WP_Error|string a signed token
	 */
	public function get_signed_token( $token ) {
		_deprecated_function( __METHOD__, '1.24.0', 'Automattic\\Jetpack\\Connection\\Tokens->get_signed_token' );
		return $this->get_tokens()->get_signed_token( $token );
	}

	/**
	 * If the site-level connection is active, add the list of plugins using connection to the heartbeat (except Jetpack itself)
	 *
	 * @param array $stats The Heartbeat stats array.
	 * @return array $stats
	 */
	public function add_stats_to_heartbeat( $stats ) {

		if ( ! $this->is_connected() ) {
			return $stats;
		}

		$active_plugins_using_connection = Plugin_Storage::get_all();
		foreach ( array_keys( $active_plugins_using_connection ) as $plugin_slug ) {
			if ( 'jetpack' !== $plugin_slug ) {
				$stats_group             = isset( $active_plugins_using_connection['jetpack'] ) ? 'combined-connection' : 'standalone-connection';
				$stats[ $stats_group ][] = $plugin_slug;
			}
		}
		return $stats;
	}

	/**
	 * Get the WPCOM or self-hosted site ID.
	 *
	 * @return int|WP_Error
	 */
	public static function get_site_id() {
		$is_wpcom = ( defined( 'IS_WPCOM' ) && IS_WPCOM );
		$site_id  = $is_wpcom ? get_current_blog_id() : \Jetpack_Options::get_option( 'id' );
		if ( ! $site_id ) {
			return new \WP_Error(
				'unavailable_site_id',
				__( 'Sorry, something is wrong with your Jetpack connection.', 'jetpack-connection' ),
				403
			);
		}
		return (int) $site_id;
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'Automattic\Jetpack\Connection\Manager' not found in /home/healths/public_html/wp-content/plugins/jetpack-social/jetpack_vendor/automattic/jetpack-connection/src/class-rest-authentication.php:61
Stack trace:
#0 /home/healths/public_html/wp-content/plugins/jetpack-social/jetpack_vendor/automattic/jetpack-connection/src/class-rest-authentication.php(71): Automattic\Jetpack\Connection\Rest_Authentication-&gt;__construct()
#1 /home/healths/public_html/wp-content/plugins/jetpack-social/src/class-jetpack-social.php(47): Automattic\Jetpack\Connection\Rest_Authentication::init()
#2 /home/healths/public_html/wp-content/plugins/jetpack-social/jetpack-social.php(92): Jetpack_Social-&gt;__construct()
#3 /home/healths/public_html/wp-settings.php(517): include_once('/home/healths/p...')
#4 /home/healths/public_html/wp-config.php(99): require_once('/home/healths/p...')
#5 /home/healths/public_html/wp-load.php(50): require_once('/home/healths/p...')
#6 /home/healths/public_html/wp-blog-header.php(13): require in <b>/home/healths/public_html/wp-content/plugins/jetpack-social/jetpack_vendor/automattic/jetpack-connection/src/class-rest-authentication.php</b> on line <b>61</b><br />