Passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution

I'm keeping most information in an actor and I would like to save also a closure in it that I get from

func application( _ application: UIApplication, handleEventsForBackgroundURLSession identifier: String, completionHandler: @escaping () -> Void)

by using code:

Task.init{ await GeoreferenceQueue.shared.setBackgroundCompletionHandler(completionHandler) }

yet I receive error:

Passing closure as a 'sending' parameter risks causing data races between code in the current task and concurrent execution of the closure

and

Sending task-isolated 'completionHandler' to actor-isolated instance method 'setBackgroundCompletionHandler' risks causing data races between actor-isolated and task-isolated uses