I’ve run several simulations, such as total orthotic sole (made up of 3 different thicknesses) or just the upper thickness, but, in both cases, when I meshed the entire geometry, the error attached occurs.
For this reason, I separated the upper insole in 3 areas (forefoot, midfoot and rearfoot) and analyzed them separately. It turned out that the midfoot area is indicted.
what should I do? delete all the faces in order to have only a solid?