Embedded binary is not signed with the same certificate as the parent app yet they are identical

Question

An app extension is causing a code signing issue. This app is already on the Appstore (with this extension) yet overnight for some reason when I have come back to this ap

Answer 1

What fixed this for me was:

1. Re-Logging to my accounts in Preferences -> Accounts.

2. Turning App Groups OFF in both (main app + keyboard extension) Targets (under Target -> Capabilities), then turning them back ON and re-selecting/re-checking the app groups.