title: Discord.JS 11.4.2 "user.createdAt" comes back as "undefined"
body: <p>I'm trying to make a userinfo command in DiscordJS 11.4.2
  Here's a sample of my code:</p>
  <pre class="lang-js prettyprint-override"><code>module.exports = {
      // CMD INFORMATION
      name: 'userinfo',
      aliases: [&quot;whoami&quot;],
      description: &quot;Gets ur user info&quot;,
      category: &quot;Information&quot;,
  
      // THE ACTUAL CODE
      execute(client, message) {
  message.channel.send(`your info:\nuser id: ${message.author.id}\nyour username and tag: ${message.author.tag}\nyour avatar (URL): ${message.author.displayAvatarURL}\nyou joined the guild at ${message.member.joinedAt}\ncake day: ${message.member.createdAt}`)
          
  
      },
  };
  </code></pre>
  <p>What it comes out as:</p>
  <p>your info:<br />
  user id: (Insert UID here)<br />
  your username and tag: Winfinity#9884<br />
  your avatar (URL): <a href="https://cdn.discordapp.com/avatars/756176319829508207/251b24bc5366d0a3fe37fc7f36f7fadf.png?size=2048" rel="nofollow noreferrer">https://cdn.discordapp.com/avatars/756176319829508207/251b24bc5366d0a3fe37fc7f36f7fadf.png?size=2048</a><br />
  you joined the guild at Sat Sep 26 2020 03:25:39 GMT+0000 (Coordinated Universal Time)<br />
  cake day: undefined</p>