var NodeHelper = require("node_helper");
const exec = require('child_process').exec;
const path = require('path');
const request = require('request');

module.exports = NodeHelper.create({

  socketNotificationReceived: function(notification) {
    if (notification === "RECOGNIZER_STARTUP"){
      console.log("Recognizer Node Helper initialized, awaiting Activation");
      this.sendSocketNotification("RECOGNIZER_CONNECTED");

    }

    else if(notification === "TAKE_SELFIE") {
      console.log("===Selfie is being taken now====")
      image = exec('fswebcam -r 1280x720 --no-banner ./public/webcam_pic.jpg')
      img = fs.readFile('./public/webcam_pic.jpg')


      requestParams = {
        api_key: '9oOudn2moC5eM-pQwLy_ugUs6rYRT7aj',
        api_secret: 'ROglv8QFta3JmGAppEYTpoPY68DjERzX',
        image_file: img,
        outer_id: 'mirrormirror'
      }

      response = request.post('https://api-us.faceplusplus.com/facepp/v3/search', requestParams)

      json = JSON.parse(response)
      console.log(json)

      this.sendSocketNotification("SELFIE_IS_GO", image)
    }
  }

});

var NodeHelper = require("node_helper");
const exec = require('child_process').exec;
const path = require('path');
const request = require('request');

module.exports = NodeHelper.create({

  socketNotificationReceived: function(notification) {
    if (notification === "RECOGNIZER_STARTUP"){
      console.log("Recognizer Node Helper initialized, awaiting Activation");
      this.sendSocketNotification("RECOGNIZER_CONNECTED");

    }

    else if(notification === "TAKE_SELFIE") {
      console.log("===Selfie is being taken now====")
      image = exec('fswebcam -r 1280x720 --no-banner ./public/webcam_pic.jpg')
      img = fs.readFile('./public/webcam_pic.jpg')


      requestParams = {
        api_key: '9oOudn2moC5eM-pQwLy_ugUs6rYRT7aj',
        api_secret: 'ROglv8QFta3JmGAppEYTpoPY68DjERzX',
        image_file: img,
        outer_id: 'mirrormirror'
      }

      response = request.post('https://api-us.faceplusplus.com/facepp/v3/search', requestParams)
      console.log(response)
      debugger
      json = JSON.parse(response)

      console.log(json)

      this.sendSocketNotification("SELFIE_IS_GO", image)
    }
  }

});

Add debugging statements to try to pinpoint json parsing issue
Add debugging statements to try to pinpoint json parsing issue
