After adding a (Core Data) Data Model to an Objective-C iOS app of mine. I get the following error message:
“Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current Swift Syntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.
This is all the more surprising that the app is not Swift but Objective-C.
If anyone has seen this before, how did you handle the problem?