WARNING! Could not load config file. Starting with default configuration. Error found: Error: Cannot find module ‘snowboy’.

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install build-essentials
sudo apt-get install gcc-5

do this first.

Then,

sudo apt-get install libasound2-dev sox libsox-fmt-all

Then,

cd ~/MagicMirror/modules/MMM-AssistantMk2
npm install --save-dev electron-rebuild
./node_modules/.bin/electron-rebuild

I wish you have a luck. Happy holidays.

1. Removed the MMM-AssistantMk2/node_modules folder.
2. npm install in the MMM-AssistantMk2 folder
   cd ~/MagicMirror/modules/MMM-AssistantMk2
   npm install --save-dev electron-rebuild
   npm install nan
3. Received the following error

WARNING! Could not load config file. Starting with default configuration. Error found: Error: Failed to load gRPC binary module because it was not installed for the current system
Expected directory: electron-v2.0-linux-arm-glibc
Found: [node-v67-linux-arm-glibc]
This problem can often be fixed by running "npm rebuild" on the current system
Original error: Cannot find module '/home/pi/MagicMirror/modules/MMM-AssistantMk2/node_modules/grpc/src/node/extension_binary/electron-v2.0-linux-arm-glibc/grpc_node.node'

4. Ran the npm rebuild command in the MMM-AssistantMk2 folder
5. Still the same error as before.
6. Ran the npm rebuild command in the MMM-AssistantMk2 > node_modules folder
7. Still the same error as before.

What do you think @sdetweil ?

Error: Cannot find module ‘snowboy’

This says you didn’t (or failed) npm install of modules. snowboy is included in MMM-Hotword and you havn’t installed it completely. Was there any suspicious error when you install MMM-Hotword?

cd ~/MagicMirror/modules/MMM-AssistantMk2
npm install --save-dev electron-rebuild
npm install nan
./node_modules/.bin/electron-rebuild

This is what I have in my config.js file

/* Magic Mirror Config Sample
 *
 * By Michael Teeuw http://michaelteeuw.nl
 * MIT Licensed.
 *
 * For more information how you can configurate this file
 * See https://github.com/MichMich/MagicMirror#configuration
 *
 */

var config = {
	address: "localhost", // Address to listen on, can be:
	                      // - "localhost", "127.0.0.1", "::1" to listen on loopback interface
	                      // - another specific IPv4/6 to listen on a specific interface
	                      // - "", "0.0.0.0", "::" to listen on any interface
	                      // Default, when address config is left out, is "localhost"
	port: 8080,
	ipWhitelist: ["127.0.0.1", "::ffff:127.0.0.1", "::1"], // Set [] to allow all IP addresses
	                                                       // or add a specific IPv4 of 192.168.1.5 :
	                                                       // ["127.0.0.1", "::ffff:127.0.0.1", "::1", "::ffff:192.168.1.5"],
	                                                       // or IPv4 range of 192.168.3.0 --> 192.168.3.15 use CIDR format :
	                                                       // ["127.0.0.1", "::ffff:127.0.0.1", "::1", "::ffff:192.168.3.0/28"],

	language: "en",
	timeFormat: 24,
	units: "metric",

	modules: [
		{
			module: "alert",
		},
		{
			module: "updatenotification",
			position: "top_bar"
		},
		{
			module: "clock",
			position: "top_left"
		},
		{
			module: "calendar",
			header: "US Holidays",
			position: "top_left",
			config: {
				calendars: [
					{
						symbol: "calendar-check-o ",
						url: "webcal://www.calendarlabs.com/templates/ical/US-Holidays.ics"
					}
				]
			}
		},
		{
  			module: "MMM-AssistantMk2",
  			position: "top_right",
  			config: {
    			       	   record: {
				   recordProgram: "arecord",
				   device: "plughw:1",
					},

				notifications: {
				   ASSISTANT_ACTIVATED: "HOTWORD_PAUSE",
				   ASSISTANT_DEACTIVATED: "HOTWORD_RESUME",
						},
  			}
		},
{
  module: "MMM-Hotword",
  config: {}
},
		{
			module: "compliments",
			position: "lower_third"
		},
		{
			module: "currentweather",
			position: "top_right",
			config: {
				location: "Auckland",
				locationID: "2193734",  //ID from http://bulk.openweathermap.org/sample/; unzip the gz file and find your city
				appid: "3469461386627eaa3c97129ab3bc70ba"
			}
		},
		{
			module: "newsfeed",
			position: "bottom_bar",
			config: {
				feeds: [
					{
						title: "New York Times",
						url: "http://www.nytimes.com/services/xml/rss/nyt/HomePage.xml"
					}
				],
				showSourceTitle: true,
				showPublishDate: true
			}
		},
	]

};

/*************** DO NOT EDIT THE LINE BELOW ***************/
if (typeof module !== "undefined") {module.exports = config;}

The error I get when running the mirror with the Hotword module says it cannot find the snowboy module… I didn’t have any problems when I installed snowboy. I rebuilt this without any problems using the code below.

cd ~/MagicMirror/modules/MMM-Hotword/node_modules/snowboy
npm install --save-dev electron-rebuild
npm install nan
./node_modules/.bin/electron-rebuild

ERROR WHEN RUNNING MIRROR WITH HOTWORD MODULE

pi@raspberrypi:~/MagicMirror $ npm start

> magicmirror@2.5.0 start /home/pi/MagicMirror
> sh run-start.sh

Starting MagicMirror: v2.5.0
Loading config ...
Loading module helpers ...
No helper found for module: alert.
Initializing new module helper ...
Module helper loaded: updatenotification
No helper found for module: clock.
Initializing new module helper ...
Module helper loaded: calendar
Initializing new module helper ...
Module helper loaded: MMM-AssistantMk2
WARNING! Could not load config file. Starting with default configuration. Error found: Error: Cannot find module 'snowboy'
Loading module helpers ...
No helper found for module: alert.
Initializing new module helper ...
Module helper loaded: updatenotification
No helper found for module: clock.
Initializing new module helper ...
Module helper loaded: calendar
Initializing new module helper ...
Module helper loaded: MMM-AssistantMk2
App threw an error during load
Error: Cannot find module 'snowboy'
    at Module._resolveFilename (module.js:543:15)
    at Function.Module._resolveFilename (/home/pi/MagicMirror/node_modules/electron/dist/resources/electron.asar/common/reset-search-paths.js:35:12)
    at Function.Module._load (module.js:473:25)
    at Module.require (module.js:586:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-Hotword/node_helper.js:10:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-Hotword/node_helper.js:115:3)
    at Module._compile (module.js:642:30)
    at Object.Module._extensions..js (module.js:653:10)
    at Module.load (module.js:561:32)
Whoops! There was an uncaught exception...
{ Error: Cannot find module 'snowboy'
    at Module._resolveFilename (module.js:543:15)
    at Function.Module._resolveFilename (/home/pi/MagicMirror/node_modules/electron/dist/resources/electron.asar/common/reset-search-paths.js:35:12)
    at Function.Module._load (module.js:473:25)
    at Module.require (module.js:586:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-Hotword/node_helper.js:10:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-Hotword/node_helper.js:115:3)
    at Module._compile (module.js:642:30)
    at Object.Module._extensions..js (module.js:653:10)
    at Module.load (module.js:561:32) code: 'MODULE_NOT_FOUND' }
MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
Launching application.