"Failed to generate mesh for domain" - from imported inductor component.

Hello,

I have an imported .stp file that is a small inductor.

I am trying to make a mesh out of it (and then eventaully find the magnetic field it produces with current running through it, which I am unsure as how to do as well) but am getting the error:

A problem occurred when building mesh feature 'Free Tetrahedral 1'

Failed to generate mesh for domain. - Domain: 2 Internal error in boundary respecting.

I have also tried using the "repair" feature from the defeaturing and repair section, but that has not helped. Below is a picture of my mesh. I am using COMSOL 5.1 and have attached the file.

here is the picture of my mesh: https://imgur.com/a/I3tUuF7