TypeError: PythonShell is not a constructor at Class.python_start (/home/pi/MagicMirror/modules/MMM-Facial-Recognition/node_helper.js:11:21)

[akashpbhardwaj]

The training is working fine but the Module doesnot works when used in config.js Please check the issue !

Here is the Log : npm start

magicmirror@2.4.1 start /home/pi/MagicMirror sh run-start.sh

Starting MagicMirror: v2.4.1 Loading config ... Loading module helpers ... Initializing new module helper ... Module helper loaded: MMM-Facial-Recognition Initializing new module helper ... Module helper loaded: MMM-OnScreenMenu No helper found for module: MMM-SimpleLogo. Initializing new module helper ... Check MagicMirror version for node helper 'MMM-CoinMarketCap' - Minimum version: 2.2.1 - Current version: 2.4.1 Version is ok! Module helper loaded: MMM-CoinMarketCap 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 No helper found for module: compliments. No helper found for module: currentweather. No helper found for module: weatherforecast. No helper found for module: MMM-google-route. Initializing new module helper ... Module helper loaded: newsfeed No helper found for module: MMM-connection-status. All module helpers loaded. Starting server on port 8080 ... Server started ... Connecting socket for: MMM-Facial-Recognition Starting module helper: MMM-Facial-Recognition Connecting socket for: MMM-OnScreenMenu Connecting socket for: MMM-CoinMarketCap MMM-CoinMarketCap: module loaded! Path: /home/pi/MagicMirror/modules/MMM-CoinMarketCap MMM-CoinMarketCap: Path "/logos" configured successfully. Connecting socket for: updatenotification Connecting socket for: calendar Starting node helper for: calendar Connecting socket for: newsfeed Starting module: newsfeed Sockets connected & modules started ... Launching application. Whoops! There was an uncaught exception... TypeError: PythonShell is not a constructor at Class.python_start (/home/pi/MagicMirror/modules/MMM-Facial-Recognition/node_helper.js:11:21) at Class.socketNotificationReceived (/home/pi/MagicMirror/modules/MMM-Facial-Recognition/node_helper.js:40:14) at Socket. (/home/pi/MagicMirror/modules/node_modules/node_helper/index.js:113:11) at emitTwo (events.js:126:13) at Socket.emit (events.js:214:7) at /home/pi/MagicMirror/node_modules/socket.io/lib/socket.js:528:12 at _combinedTickCallback (internal/process/next_tick.js:131:7) at process._tickCallback (internal/process/next_tick.js:180:9) 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 MMM-CoinMarketCap: Socket Notification Received: "INIT". MMM-CoinMarketCap: Socket Notification Received: "GET_LISTINGS". Create new calendar fetcher for url: http://www.calendarlabs.com/ical-calendar/ics/33/India_Holidays.ics - Interval: 300000 Create new news fetcher for url: http://www.nytimes.com/services/xml/rss/nyt/HomePage.xml - Interval: 300000 MMM-CoinMarketCap: Socket Notification Received: "GET_CURRENCY_DETAILS". MMM-CoinMarketCap: Socket Notification Received: "GET_CURRENCY_DETAILS". MMM-CoinMarketCap: Socket Notification Received: "GET_CURRENCY_DETAILS". MMM-CoinMarketCap: Socket Notification Received: "GET_CURRENCY_DETAILS".

2nd The config file 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: 'MMM-Facial-Recognition', config: { // 1=LBPH | 2=Fisher | 3=Eigen recognitionAlgorithm: 1,
lbphThreshold: 50, fisherThreshold: 250, eigenThreshold: 3000, // force the use of a usb webcam on raspberry pi (on other platforms this is always true automatically) useUSBCam: false, // Path to your training xml trainingFile: 'modules/MMM-Facial-Recognition/training.xml', // recognition intervall in seconds (smaller number = faster but CPU intens!) interval: 2, // Logout delay after last recognition so that a user does not get instantly logged out if he turns away from the mirror for a few seconds logoutDelay: 15, // Array with usernames (copy and paste from training script) users: ['Akash', 'None'], //Module set used for strangers and if no user is detected defaultClass: "default", //Set of modules which should be shown for every user everyoneClass: "everyone", // Boolean to toggle welcomeMessage welcomeMessage: true } }, { module: 'MMM-OnScreenMenu', position: 'bottom_right', / Valid positions: 'top_right', 'top_left', 'bottom_right', 'bottom_left' / config: { touchMode: true, enableKeyboard: true, // ... see more options below } } ]

};

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

Other modules are also there but i think no need to show here as the error in the log is from Face recognition module

[PimDietzenbacher]

Same problem. How did you solve this????

[dimitrystd]

Me too. JIC

MagicMirror: v2.4.1
Python: 2.7.13
Node: 9.11.2
NPM: 6.4.1

[JooMiHyun]

i also have same problem. How did you solve this?

[ejwessel]

+1 having this issue

Edit: I googled around for the error regarding PythonShell is not a constructor and came across: https://github.com/extrabacon/python-shell/issues/154

It suggests using curly brackets around PythonShell const {PythonShell} = require("python-shell");

[shayfer]

I have tried that as well but now I get a new error.

SyntaxError: Unexpected token T in JSON at position 0 at JSON.parse () at PythonShell.asJson (/home/pi/MagicMirror/modules/MMM-Motion-Detection/node_modules/python-shell/index.js:350:21) at /home/pi/MagicMirror/modules/MMM-Motion-Detection/node_modules/python-shell/index.js:302:42 at Array.forEach () at PythonShell.recieveInternal (/home/pi/MagicMirror/modules/MMM-Motion-Detection/node_modules/python-shell/index.js:298:15) at PythonShell.receiveStderr (/home/pi/MagicMirror/modules/MMM-Motion-Detection/node_modules/python-shell/index.js:282:21) at Socket. (/home/pi/MagicMirror/modules/MMM-Motion-Detection/node_modules/python-shell/index.js:100:18) at emitOne (events.js:116:13) at Socket.emit (events.js:211:7) at addChunk (_stream_readable.js:263:12) { Error: ImportError: No module named 'cv2' at PythonShell.parseError (/home/pi/MagicMirror/modules/MMM-Motion-Detection/node_modules/python-shell/index.js:232:21) at terminateIfNeeded (/home/pi/MagicMirror/modules/MMM-Motion-Detection/node_modules/python-shell/index.js:121:32) at ChildProcess. (/home/pi/MagicMirror/modules/MMM-Motion-Detection/node_modules/python-shell/index.js:113:13) at emitTwo (events.js:126:13) at ChildProcess.emit (events.js:214:7) at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12) ----- Python Traceback ----- File "modules/MMM-Motion-Detection/motiondetection/motiondetection.py", line 19, in import cv2 traceback: 'Traceback (most recent call last):\n File "modules/MMM-Motion-Detection/motiondetection/motiondetection.py", line 19, in \n import cv2\nImportError: No module named \'cv2\'\n', executable: 'python3', options: null, script: 'modules/MMM-Motion-Detection/motiondetection/motiondetection.py', args: [ '{"useUSBCam":false,"interval":1,"motionStopDelay":120,"detectionThreshold":1000,"turnOffDisplay":true}' ], exitCode: 1 }

[nater303]

• Open node_helper.js var option = {pythonPath: 'python'} const pyshell = new PythonShell('modules/' + this.name + '/facerecognition/facerecognition.py', option, { mode: 'json', args: [JSON.stringify(this.config)]});

[nosee818]

• Open node_helper.js var option = {pythonPath: 'python'} const pyshell = new PythonShell('modules/' + this.name + '/facerecognition/facerecognition.py', option, { mode: 'json', args: [JSON.stringify(this.config)]});

Do you mean add var options? It does not work for me. :(

[roudaille]

same issue over here. Same node_helper.js tested with MMM-Facial-Recognition-OCV3 is working fine.

[fpdrozd]

Hi, I installed an older version of python-shell (0.4.0 - released 3 years ago) and it works without modifying the node_helper.js file. There had to be some breaking changes.

[Sumrag]

Hi, I installed an older version of python-shell (0.4.0 - released 3 years ago) and it works without modifying the node_helper.js file. There had to be some breaking changes.

Hi! How did you install an older version of python shell to make the MMM-Facial-Recognition work?

[Sumrag]

I have tried that as well but now I get a new error. Where you able to solve the issue? My output is the same as yours when I insert the curly brackets.

[fpdrozd]

@Sumrag You can install this specific version of python-shell by this command: npm install python-shell@0.4.0

(npm docs reference)