Flatten Error when Exporting to PARTShare

When creating a new part in PARTShare, the add-in in solidworks, this error message populate. Seems like the part won't flatten for this export action. But in solidworks, the flatten feature of sheet metal works perfectly with all my parts. I have even tried a part with no bends in it and this error message still populate. I'm hoping someone can aid me in finding a solution to this issue.