I might have found a solution... previously I wasn't using the "Contact Notes" entitlements in the macOS app, only on iOS. But with macOS13, I've been getting warnings in Xcode about it, soon "Certificates, Identifiers & Profiles" from the developer portal, I added the "Contact Notes" entitlements to the app identifier and created a manual provisioning profile, then in Xcode I added the "com.apple.developer.contacts.notes" entitlement to the entitlements file, and set the new profile as the developer profile in Xcode. And now it works.
Am still testing some more to confirm the fix, but it might just be that the "container assignment" error is just a misdirection.
Topic:
Programming Languages
SubTopic:
Swift
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