Xcode crashes when I drag and drop CountlyNotificationService.h/m to the compile sources #496

I followed the documentation in order to setup push notifications on iOS. When I drag and drop the CountlyNotificationService.h or .m Xcode crashes.

I am using Xcode 16.4 .

Has anyone else also experienced this problem?
Is there another way of adding these files to the compile sources without using Xcode?
Or which version of Xcode works for you?

Thank you! :)