title: Run usdz_converter but nothing come out
body: <p>I tried to run command </p>
  
  <p>xcrun usdz_converter test_obj.obj test_obj.usdz</p>
  
  <p>command is successfully run and it said converted, but no any new file generated. </p>
  
  <p>Anyone facing same problem ?</p>
  
  <p>USING XCODE 10A255 OS High Sierra Version 10.13.6</p>
  
  <p><a href="https://i.stack.imgur.com/KCpxe.png" rel="nofollow noreferrer">result here</a></p>