Error:XPC connection interrupted - iphone

Question

I am scheduling notification by running the loop in an array.Notification is working fine.But my application is crashing with this error.I know that the OS stops working and os gets rebooted but if i dont call this scheduleNotification function then everything works fine so i know that the error is generation because of this function when i pops to other screen and comes back again my app gets crashg but i dont know why?? please help me out.
func scheduleNotification() {
if dictInfo.object(forKey: "name") !as AnyObject as ? String == "zzz" {
} else {
let calendar = Calendar.current
var calendarComponents = DateComponents()
let strDay = (dictInfo["dd"
as NSString] !as AnyObject).doubleValue
let strMonth = (dictInfo["mm"
as NSString]) !
let dayy = strDay
let monthh = strMonth
calendarComponents.hour = 11
calendarComponents.minute = 04
calendarComponents.day = Int(dayy!) - 2
print(calendarComponents.day)
let df = DateFormatter()
df.dateFormat = "MM" // if you need 3 letter month just use "LLL"
let datee1 = df.date(from: String(describing: monthh))
print(datee1)
let monthh11 = (Calendar.current as NSCalendar).component(.month, from: datee1!)
print(monthh11) // 5
//calendarComponents.year = Int(yearr!)
calendarComponents.month = Int(monthh11)
let newComponents = DateComponents(calendar: calendar, timeZone: .current, month: calendarComponents.month, day: calendarComponents.day, hour: calendarComponents.hour, minute: calendarComponents.minute)
if# available(iOS 10.0, * ) {
let strName: String = String(describing: dictInfo["name"] !)
let str2: String! = "Today is \(strName)\'s Birthday!"
let trigger = UNCalendarNotificationTrigger(dateMatching: newComponents, repeats: false)
let content = UNMutableNotificationContent()
content.title = "Alert Me!"
content.body = str2
content.sound = UNNotificationSound.default()
content.categoryIdentifier = "myCategory"
content.userInfo = ((dictInfo as Any) as ? [AnyHashable: Any]) !
print(content.userInfo.count)
let request = UNNotificationRequest(identifier: strName, content: content, trigger: trigger)
// UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
UNUserNotificationCenter.current().add(request) {
(error) in
if let error = error {
print("Uh oh! We had an error: \(error)")
} else {
}
}
}
}
MBProgressHUD.hide(
for: self.view, animated: true)
tableVieww.isHidden = false
//self.navigationItem.leftBarButtonItem?.isEnabled = true
}