old_contents: var TvApi = require('node-lgtv-api');
  var imageName = 'screen.jpg';
  
  module.exports = {
      handle: function (ctx, message, sendMessage) {
          var lgTV = ctx.network.lgTV;
          var tvApi = new TvApi(lgTV.host, lgTV.port, lgTV.pairingKey);
          tvApi.authenticate(function (err, sessionKey) {
                  if (err) {
                      console.error(err);
                  } else {
                      tvApi.takeScreenShot(imageName, function (err, data) {
                          if (err) {
                              console.error(err);
                          } else {
                              ctx.log.debug(message.from.username + ' <- ' + imageName);
                              ctx.bot.sendPhoto(message.from.id, imageName, {caption: 'TV Screen'});
                          }
                      });
                  }
              }
          );
      }
  };
  
new_contents: var TvApi = require('node-lgtv-api');
  var imageName = 'screen.jpg';
  
  module.exports = {
      handle: function (ctx, message, sendMessage) {
          var lgTV = ctx.config.network.lgTV;
          var tvApi = new TvApi(lgTV.host, lgTV.port, lgTV.pairingKey);
          tvApi.authenticate(function (err, sessionKey) {
                  if (err) {
                      console.error(err);
                  } else {
                      tvApi.takeScreenShot(imageName, function (err, data) {
                          if (err) {
                              console.error(err);
                          } else {
                              ctx.log.debug(message.from.username + ' <- ' + imageName);
                              ctx.bot.sendPhoto(message.from.id, imageName, {caption: 'TV Screen'});
                          }
                      });
                  }
              }
          );
      }
  };
  
subject: Fix error with TV screen