Please review my model

Hi everybody,

I modelized a men’s ring on Rhino5. I diagnozed the object and no error went found.

I print a first model with a Formlabs 2 and everything was ok.

Now, i need to print it with an envision tec printer, and its software indicates that the file has errors.

I can’t find them in order to fix them.

Can someone help me on this, please?

Here s the link to download the file:

Thx a lot