[Markwright]

I'm trying to simulate a simplified packed bed in a thermal storage. To do so i considered two layers of spheres and, due to the high number of elements, i only considered one portion of the tank (45°) and i delete the sphere on the edge of the slice (even if it causes some holes but i didn't have any better idea). The problem is that when i try to mesh this message appeares: The mesh file exporter could not resolve cyclic dependencies in overlapping contact regions. Please try to Repair Overlapping Contact Regions.
What i'm doing wrong?