TypeError: Invalid type
    at invoke (native)
    at connectWithHostAndPort (core.js:1273)
    at <anonymous> (core.js:1332)
    at func (core.js:2325)
    at nextTickHandler (core.js:2334)

Here is my whole MQTT code, and I am using the latest version of mqtt.js that is posted on https://github.com/50ButtonsEach/flic-hub-sdk-mqtt-js

const mqttClient = require('./mqtt').create(mqttBroker, {username: mqttUsername, password: mqttPassword}) // https://github.com/50ButtonsEach/flic-hub-sdk-mqtt-js

mqttClient.on('connected', () => {
	console.log(`Connected to MQTT Broker ${mqttBroker}`)
	mqttClient.subscribe('[TOPIC]')
})

mqttClient.on('disconnected', () => {
	throw new Error(`DISCONNECTED from MQTT Broker ${mqttBroker}`) // Error to restart script if disconnected from MQTT broker.
})

mqttClient.on('publish', (pub) => {
	console.log(`\nReceived MQTT Message on Topic: ${pub.topic}\n${pub.message}`)

	// Handle button actions here.
})

mqttClient.connect()
setInterval(() => { if (!mqttClient.connected) throw new Error('MQTT Broker NOT CONNECTED') }, 900000)
// Check every 15 minutes that MQTT Broker is connected, and throw error to restart script if not.
// This check is important if fails to connect to MQTT Broker at launch, when the "disconnected" event would never be sent.