A 1024 x 1024 pixel app icon for your app must be added to the asset catalog in Xcode

"In apple App Store: Unable to Add for Review The items below are required to start the review process: A 1024 x 1024 pixel app icon for your app must be added to the asset catalog in Xcode." I use xamarin and with every single update, I get the same error. Already checked agreements, deleted assets and rebuild the icons, checked icon sizes and verified no alpha channel either. Can anyone help please? This is suffocating.