Ice maker vibrates and gives no ice. It has sounded almost likely a mechanical cricket is stuck in

Question

It has sounded almost likely a mechanical cricket is stuck in the freezer. We had seen frost on back wall of refrigerator -- I was overdue vacuuming the coils and did it really clean. The frost is gone, but now no ice. Maybe coincidence...I've cleaned out the entire freezer and fiddled with the ice maker, but no reaction. Any ideas?