Missing Marketing Icon. iOS Apps

Missing Marketing Icon. iOS Apps must include a 1024x1024px Marketing Icon in PNG format. Apps that do not include the Marketing Icon cannot be submitted for App Review or Beta App Review.
我们在提交APP store的时候页面弹出错误信息.是由于iOS 11以后项目中的AppIcon需要提交1024*1024的营销icon,成功提交icon后就可以继续提交项目审核了.需要注意的是这张图片需要是非透明且非Alpha通道的