title: ar.js FBX model doesn't show up
body: <p>I've started learning to create AR scenes with AR.js and I'm having trouble with loading custom 3D FBX. I've tried many examples and all of them work perfectly, but none with fbx models. Im using a model from mixamo.</p>
  <pre><code>&lt;!DOCTYPE html&gt;
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  <p>Do I need some other library?</p>
  <p><a href="https://i.stack.imgur.com/dT5Xw.png" rel="nofollow noreferrer">CODE IMAGE</a></p>