Ionic io packaged app doesn't pass App Store upload



How can I verify that EMBEDDED_CONTENT_CONTAINS_SWIFT flag is well configured to YES on the ionic io builds?

When submitting an app to the App Store, I get a notification that Xcode and swift is too old and one should use a newer version. This might be tied to the flag above not being set while compiling with Xcode.

To be honest I don’t know enough about swift and Xcode.