The belt pressure is too high to drive the belt motor. If it is forcibly opened, it may cause the motor to burn out. There are two ways to deal with this situation. The first is to peel off some materials evenly at all points on the conveyor belt. Then open it again, or push it hard to the bottom belt with manpower, which will change the overall tightness of the belt and increase the traction. I hope it can be passed manually.