I am not sure if the sand was washed away by the water that is going under the patio in that corner or the bedding material is simply missing here. The paver below is from the left circled area in the second photo. That corner is actually raised a little bit which is the opposite that should happen if the sand was washed away from under the paver. So ...what material was used for bedding here? Can I say that the bedding is missing?