Unity ios Cant build framework

Hi there!
I begin with Unity and a ios mobile project. I get those errors when I try to build and run on iphone target :

Undefined symbols for architecture arm64:
  "_OBJC_CLASS_$_UNNotificationRequest", referenced from:
      objc-class-ref in UnityNotificationManager.o
  "_OBJC_CLASS_$_UNNotificationSound", referenced from:
      objc-class-ref in UnityNotificationManager.o
  "_OBJC_CLASS_$_UNMutableNotificationContent", referenced from:
      objc-class-ref in UnityNotificationManager.o
  "_OBJC_CLASS_$_UNCalendarNotificationTrigger", referenced from:
      objc-class-ref in UnityNotificationData.o
      objc-class-ref in UnityNotificationManager.o
  "_OBJC_CLASS_$_UNPushNotificationTrigger", referenced from:
      objc-class-ref in UnityNotificationData.o
      objc-class-ref in UnityNotificationManager.o
  "_OBJC_CLASS_$_UNLocationNotificationTrigger", referenced from:
      objc-class-ref in UnityNotificationData.o
  "_OBJC_CLASS_$_UNUserNotificationCenter", referenced from:
      objc-class-ref in UnityAppController+Notifications.o
      objc-class-ref in UnityNotificationWrapper.o
      objc-class-ref in UnityNotificationManager.o
  "_OBJC_CLASS_$_UNTimeIntervalNotificationTrigger", referenced from:
      objc-class-ref in UnityNotificationData.o
      objc-class-ref in UnityNotificationManager.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Help on this highly appreciated

Thank you all
Julien

The issue has gone as I added some code into my project.
Everything is building nice.
Sorry for that!