Not getting call back to DeviceActivityMonitor extension

Hi,

Problem: Even after successful schedule creation I am not getting call backs(intervalDidStart, intervalDidEnd) to my extension

I have created DeviceActivityMonitor extension by creating call Directory Extension and updated info plist with the value (com.apple.deviceactivity.monitor-extension) and updated principal class value too.

I try running the extension on my demo app which has the below code,

        let schedule = DeviceActivitySchedule(

            intervalStart: DateComponents(hour: 10, minute: 30),

            intervalEnd: DateComponents(hour: 12, minute: 15),

            repeats: true,

            warningTime: nil)

        do {
            let center = DeviceActivityCenter()

            center.stopMonitoring([.daily])

            try center.startMonitoring(.daily, during: schedule)

            print("Schedule created")

            print(center.activities)

        } catch {
            print(error)
        }
    }

My extension has the below code,

override func intervalDidStart(for activity: DeviceActivityName) {

        super.intervalDidStart(for: activity)

        print("Entered Did Start")

    }

    override func intervalDidEnd(for activity: DeviceActivityName) {

        super.intervalDidEnd(for: activity)

        print("Entered Did End")

    }

Please guide me to find out the issue. Thanks in advance.