Embedding Video by video id return 400 and cors problem

API
10 
<html>
  <body>
    <!-- Add a placeholder for the Twitch embed -->
    <div id="twitch-embed"></div>

    <!-- Load the Twitch embed script -->
    <script src="https://embed.twitch.tv/embed/v1.js"></script>

    <!-- Create a Twitch.Embed object that will render within the "twitch-embed" root element. -->
    <script type="text/javascript">
      new Twitch.Embed("twitch-embed", {
        width: 854,
        height: 480,
        channel: "monstercat"
      });
    </script>
  </body>
</html>

OR

<iframe
    src="https://player.twitch.tv/?channel=monstercat"
    height="<height>"
    width="<width>"
    frameborder="<frameborder>"
    scrolling="<scrolling>"
    allowfullscreen="<allowfullscreen>">
</iframe>