Kenmore Elite Washing Machine

I have a Kenmore Elite washing machine model # 796.31512211 for sale. It is in great cosmetic condition as you can see from the photos (of the actual machine). The inner stainless steel tub looks new. It works fine but often gives the UE error. Once you re-arrange the tub load, it runs fine until the next UE error. I don’t know how to fix it. It is being sold as-is. Buyer needs to come pick up the machine from Canton.