!sad throws error: "TypeError: Cannot read property of 'members' of undefined"

!sad throws error: "TypeError: Cannot read property of 'members' of undefined"

机器人的启动正常,但是当我在 discord 中调用命令 !sad 时,我收到一条错误消息 TypeError: Cannot read property 'members' of undefined'

var Discord = require('discord.io');
var logger = require('winston');
var auth = require('./auth.json');
// Configure logger settings
logger.remove(logger.transports.Console);
logger.add(new logger.transports.Console, {
  colorize: true
});
logger.level = 'debug';

// Initialize Discord Bot
var bot = new Discord.Client({
  token: auth.token,
  autorun: true
});

bot.on('ready', function(evt) {
  logger.info('Connected');
  logger.info('Logged in as: ');
  logger.info(bot.username + ' - (' + bot.id + ')');
});

bot.on('message', function(user, userID, channelID, message, evt) {
  if (message.substring(0, 1) == '!') {
    var args = message.substring(1).split(' ');
    var cmd = args[0];

    args = args.splice(1);
    switch (cmd) {

      case 'sad':
        message.guild.members.get("NotSaltShaker93#8606").kick();
        bot.sendMessage({
          to: channelID,
          message: 'ET has been kicked'
        });
        break;

    }
  }
});

我为此使用了错误的命令,它应该是:

bot.kick('415286393062031361');