I get this \"No image found at the path referenced under key \'CFBundleIcons\':\" error,
Open the contents.json file located in the Images.xcassets > AppIcon.appiconset folder in a text-editor application. Check each file reference and make sure it mentions a valid file in that folder. If any are missing or named differently, change the text to a valid file.
Save the file then do what you normally do to submit. Happy successful submissions?