Missing required icon error when uploading to app store

Balue

I am trying to upload my app to the store for the first time.
getting this annoying error:

I have understood that the last error is because of the release of Xcode 11.2.1
but what is this icon error?

LandLu

It is basically because you used the wrong format of images for the icon or you missed some required icons.
Please check your AppIcon file in the Asset Catalog:

Did you miss the icons in the red box?

LandLu

It is basically because you used the wrong format of images for the icon or you missed some required icons.
Please check your AppIcon file in the Asset Catalog:

Did you miss the icons in the red box?

Balue

Recreated the Asset catalog and added each image and everything is OK now. now only getting the last error about the unsupported xcode.