I am having an issue with JavaScript. I'm getting this error message:

Uncaught NotFoundError: Failed to execute 'insertBefore' on 'Node': The node before which the new node is to be inserted is not a child of this node.

Javascript:

var vidCounter = 0;

vidCounter++;



var originalDiv;

var newVideo = document.createElement("video");



newVideo.setAttribute("name", vidCounter);

newVideo.setAttribute("autoplay", "true");

originalDiv = document.getElementById("othersarea");

document.body.insertBefore(newVideo, originalDiv); 

It is trying to add a <video> tag below a div called othersarea.

<div id="remoteVideos">

  <div class="title">

    <h2>Others</h2>

  </div>

  <div id="othersarea"></div>

</div>

How do I fix this?

I also want to run attachMediaStream([VIDEO TAG HERE HOW?], event.stream); on my new video tag.