Bot框架-Facebook提示问题

我正在使用bot框架。我有我的Facebook机器人在线，我正在检查我的服务器中的所有请求。有时我的服务器没有收到提示和答案（HeroCards按钮工作正常）。如果我重试并多次发送消息，它会正常工作。如果我使用模拟器，它可以正常工作

为了得到答案，我写了三次“波洛”

module.exports = (bot, builder, connector) => {

bot.dialog('/delivery', [
    (session) => {
        session.send('Bienvenido a 99UNO Delivery.');

        let msg = new builder.Message(session)
            .attachmentLayout(builder.AttachmentLayout.carousel)
            .attachments([
                new builder.HeroCard(session)
                    .title('Pizza')
                    .subtitle('Todas nuestras pizzas.')
                    .images([
                        builder.CardImage.create(session, 'http://www.cateringolivia.com.ar/fotos/ser2_1g.jpg')
                            .tap(builder.CardAction.showImage(session, 'http://mx.cdn01.mundotkm.com/2016/01/e9a9d35c744f3ff11a97e32274411d8b_large.jpeg')),
                    ])
                    .buttons([
                        builder.CardAction.imBack(session, 'Pizza', 'Seleccionar')
                    ]),
                new builder.HeroCard(session)
                    .title('Parrilla')
                    .subtitle('Carne, Pollo, Achuras.')
                    .images([
                        builder.CardImage.create(session, 'https://media-cdn.tripadvisor.com/media/photo-s/03/85/0c/c7/parrilla-tour-buenos.jpg')
                            .tap(builder.CardAction.showImage(session, 'https://restorando-res.cloudinary.com/image/upload/s--L2hhcZz2--/c_fit,f_auto,h_500,w_700/v1416341745/restaurant_photos/x/6939/52684/restaurante_parrilla-atahualpa_centro_10390894_1485980544972645_3906330496111888189_n.jpg')),
                    ])
                    .buttons([
                        builder.CardAction.imBack(session, 'Parrilla', 'Seleccionar')
                    ])
            ]);
        builder.Prompts.choice(session, msg, 'Pizza|Parrilla', {listStyle: builder.ListStyle.button});
    },
    (session, results) => {
        session.beginDialog('/' + results.response.entity.toLowerCase());
    }
]);

bot.dialog('/pizza', [
    (session) => {
        builder.Prompts.choice(session, 'Qué gusto desea pedir?', 'mozzarella|napolitana|jamon', {listStyle: builder.ListStyle.button});
    },
    (session, results) => {
        session.endDialog('Ya estamos llevando una pizza de ' + results.response.entity + ' a tu casa. Que lo disfrutes!');
    }
]);

bot.dialog('/parrilla', [
    (session) => {
        builder.Prompts.choice(session, 'Qué desea pedir?', 'vacio|pollo', {listStyle: builder.ListStyle.button});
    },
    (session, results) => {
        session.endDialog('Ya estamos llevando el ' + results.response.entity + ' a tu casa. Que lo disfrutes!');
    }
]);


};

服务器：AmazonEC2中的Nodejs。在index.js中使用morgan：

app.use(morgan(':method :url :status - [:date[clf]] - :remote-addr - :response-time'));

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有什么想法吗？

如果不查看代码，不获取有关托管位置的更多信息/更多详细信息等，很难提供帮助。我编辑了我的问题