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

So if anyone comes across this cryptic message the "App Group" switch in Capabilities of the app extension was off for some reason. Turned it back on and all good. Fix any "issues" if it requires you to when you do this