Hi,
I've had the same issue just now. It seems that something is wrong with provisioning profiles, they got invalidated or something. Anyway, regenerating them helped.
If you have 'Automatically manage signing' enabled in your project then you could do the following.
Close Xcode
rm -rf ~/Library/MobileDevice/Provisioning\ Profiles/
Open Xcode and wait until it updates profiles
Try submitting the app again
In my case the issue was gone after the profiles were updated.
Topic:
Developer Tools & Services
SubTopic:
Xcode
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