title: My mentions don't work, just send undefined
body: <p>how to mark someone, on channel send message "Hello xd undefined." help me</p>
  
  <pre><code>const Discord = require('discord.js');
  module.exports = {
      help: { name: "command" },
      run: (bot, message, args) =&gt; {
          if(!message.mentions.users) {
              return message.channel.send("bad, mention member!``")
          }
          bot.channels.get("587994214906724362").send("hello xd " + message.mentions.users.first() + ".")
      },
  }
  </code></pre>