Phantom parts inside Alfie cuff

[laurakshank]

Hello. I was wondering if anyone could help me. I downloaded the SCAD file for the Alfie 2 arm and converted the pieces for a particular recipient. When they are uploading them to 3D Hub to be printed, it shows extra material in the holes of the cuff. I do not see this when I look at the stl in Fusion 360 or Inventor, so I don't know how to get rid of it. Has anyone had this issue before? Please see the attached photo: