Asset validation failed (90236) Missing required icon. The application bundle does not contain an icon in ICNS format, containing both a 512x512 and a 512x512@2x image. For further assistance, see the Human Interface Guidelines at https://developer.apple.com/design/human-interface-guidelines/foundations/app-icons/. (ID: xxxxxx-a8a7-4dd3-9d3a-xxxxxxxxxxxx)
I am getting this, while uploading .pkg file of electron web app for Mac through Transporter for TestFlight.