TypeError: Cannot read property 'id' of undefined

[neogeek]

I'm running into an error while using this middleware along with the example code from the README. My experience with Botkit and Wit.ai is limited so I'm not sure if it's something I'm doing incorrectly or an actual bug.

I've included the code I'm testing with and the output of the console.

const Botkit = require('botkit');

const controller = Botkit.facebookbot({
    'access_token': process.env.FACEBOOK_PAGE_TOKEN,
    'verify_token': process.env.VERIFY_TOKEN
});

const wit = require('botkit-middleware-witai')({
    'token': process.env.WITAI_TOKEN
});

controller.middleware.receive.use(wit.receive);

controller.setupWebserver(process.env.PORT, (err, webserver) => {

    controller.createWebhookEndpoints(webserver, controller.spawn());

});

controller.hears(['hello'], 'message_received', wit.hears, (bot, message) => {

    bot.reply(message, 'hi!');

});

{
  "engines": {
    "node": ">=6.0"
  },
  "dependencies": {
    "botkit": "0.4.0",
    "botkit-middleware-witai": "howdyai/botkit-middleware-witai"
  }
}

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14:55:41 web.1  | info: ERROR IN RECEIVE MIDDLEWARE:  TypeError: Cannot read property 'id' of undefined
14:55:41 web.1  |     at Ware.middleware.receive (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/botkit-middleware-witai/src/botkit-middleware-witai.js:34:62)
14:55:41 web.1  |     at Ware.<anonymous> (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/wrap-fn/index.js:45:19)
14:55:41 web.1  |     at next (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/ware/lib/index.js:85:20)
14:55:41 web.1  |     at Ware.run (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/ware/lib/index.js:88:3)
14:55:41 web.1  |     at Object.Botkit.botkit.receiveMessage (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/botkit/lib/CoreBot.js:973:35)
14:55:41 web.1  |     at /Users/scottdoxey/git/github/scottdoxeybot/node_modules/botkit/lib/Facebook.js:202:45
14:55:41 web.1  |     at Layer.handle [as handle_request] (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/express/lib/router/layer.js:95:5)
14:55:41 web.1  |     at next (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/express/lib/router/route.js:131:13)
14:55:41 web.1  |     at Route.dispatch (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/express/lib/router/route.js:112:3)
14:55:41 web.1  |     at Layer.handle [as handle_request] (/Users/scottdoxey/git/github/scottdoxeybot/node_modules/express/lib/router/layer.js:95:5)