The block that I added when trying to reverse through setValue causes a crash with the code -1

Block class:

public class Conveyor extends Block {
    public static final VoxelShape SHAPE = Block.box(0.0D,0.0D,0.0D,16.0D,6.0D,16.0D);
    public static final DirectionProperty FACING = BlockStateProperties.HORIZONTAL_FACING;


    public Conveyor(Properties properties) {
        super(properties);
    }
    public BlockState getStateForPlacement(BlockItemUseContext pContext) {
        return this.defaultBlockState().setValue(FACING, Direction.NORTH);
    }

}