can not start service

[ag-ni]

Hi,

Tried installing and running the voice-engine but ended up with errors --

npm start

voice-engine@1.0.0 start /home/pi/voice-engine-proj
node server.js

{"name":"VoiceEngine","hostname":"raspberrypi","pid":5141,"level":30,"msg":"start keyword spotter","time":"2018-01-09T14:35:39.552Z","v":0}
{"name":"VoiceEngine","hostname":"raspberrypi","pid":5141,"level":30,"msg":"Online speech recognition started!","time":"2018-01-09T14:35:39.580Z","v":0}
{"name":"VoiceEngine","hostname":"raspberrypi","pid":5141,"level":30,"msg":"hasFlac true","time":"2018-01-09T14:35:39.601Z","v":0}
{"name":"VoiceEngine","hostname":"raspberrypi","pid":5141,"level":30,"msg":"create recognizeStream","time":"2018-01-09T14:35:39.732Z","v":0}
{"name":"VoiceEngine","hostname":"raspberrypi","pid":5141,"level":30,"msg":"Spawn microophone process","time":"2018-01-09T14:35:39.734Z","v":0}
/home/pi/voice-engine-proj/server.js:21
engine.synthesizeText(text);
^

ReferenceError: text is not defined
at Object. (/home/pi/voice-engine-proj/server.js:21:23)
at Module._compile (module.js:641:30)
at Object.Module._extensions..js (module.js:652:10)
at Module.load (module.js:560:32)
at tryModuleLoad (module.js:503:12)
at Function.Module._load (module.js:495:3)
at Function.Module.runMain (module.js:682:10)
at startup (bootstrap_node.js:191:16)
at bootstrap_node.js:613:3
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! voice-engine@1.0.0 start: node server.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the voice-engine@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /home/pi/.npm/_logs/2018-01-09T14_35_39_794Z-debug.log

Below is my server.js file -
var VoiceEngine = require('voice-engine');

var sttengine = {
url: "https://stream.watsonplatform.net/speech-to-text/api",
username: "snip",
password: "snip"
}
var ttsengine = {
url:"https://stream.watsonplatform.net/text-to-speech/api",
username:"snip",
password:"snip"
}
var speech = {
model: "watson.pmdl",
sensitivity: 0.4
}
var engine = new VoiceEngine(sttengine, ttsengine, speech);

engine.startKeywordSpotting();
engine.startSttRecognition();
engine.synthesizeText(text);
//engine.synthesizeText(text);

engine.on('keyword', function() {

})
engine.on('recognition-stopped', function() {

})

engine.on('recognition', function(message) {

})
engine.on('synthesized', function(message) {

})

Thank you.