RemoveAlarm.kt

   private fun removeAlarm(taskInfo: TaskInfo){
        val alarmManager = activity?.getSystemService(Context.ALARM_SERVICE) as AlarmManager
        val intent = Intent(requireContext(), AlarmReceiver::class.java)
        // It is not necessary to add putExtra
        intent.putExtra("task_info", taskInfo)
        val pendingIntent = PendingIntent.getBroadcast(requireContext(), taskInfo.id, intent, PendingIntent.FLAG_IMMUTABLE)
        alarmManager.cancel(pendingIntent)
    }