I was able to resolve this by enabling "Access to Cloud Managed Distribution Certificate" in App Store Connect -> Users and Access. More details here: https://developer.apple.com/forums/thread/688626?answerId=689590022#689590022 Good luck!

I was able to resolve this issue by enabling "Access to Cloud Managed Distribution Certificate" in App Store Connect -> Users and Access for my account. The issue seems to stem from the new cloud signing feature from wwdc21-10204. In my situation, Xcode 13 was failing to recognize the locally installed distribution certificate and attempted to use cloud signing (see https://help.apple.com/developer-account/#/dev8e84490b9 under "Configure for local signing"). Hope this helps someone else!