Crash with MQTT

pico

I have been using MQTT properly with the following code for a long time, and then yesterday I noticed my buttons weren't responding and when checking the Flic Hub Studio console I see that my script is crashing over and over again when running mqttClient.connect() with the following error:

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.

pico

I just noticed this post https://community.flic.io/topic/18577/mqtt-issue-on-firmware-version-4-4-5 and updated Flic Hub to version 4.4.6 which appears to have solved the crash.