Crashed: com.apple.main-thread EXC_BREAKPOINT 0x0000000100c5009c keyboard_arrow_up - ios

Question

I am new iOS development, I got this error from firebase crash analytics. Can anyone help me why this errors occurs?
Crashed: com.apple.main-thread
0 People Time Tracking 0x100c5009c closure #1 in closure #1 in SelectJobScreen.getPreviousStatus() (SelectJobScreen.swift:798)
1 People Time Tracking 0x100cb2648 thunk for #escaping #callee_guaranteed () -> () (<compiler-generated>)
2 libdispatch.dylib 0x1e6993a38 _dispatch_call_block_and_release + 24
3 libdispatch.dylib 0x1e69947d4 _dispatch_client_callout + 16
4 libdispatch.dylib 0x1e6942004 _dispatch_main_queue_callback_4CF$VARIANT$mp + 1068
5 CoreFoundation 0x1e6ee4ec0 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12
6 CoreFoundation 0x1e6edfdf8 __CFRunLoopRun + 1924
7 CoreFoundation 0x1e6edf354 CFRunLoopRunSpecific + 436
8 GraphicsServices 0x1e90df79c GSEventRunModal + 104
9 UIKitCore 0x212cc5b68 UIApplicationMain + 212
10 People Time Tracking 0x100c1afcc main (TodoItem.swift:17)
11 libdyld.dylib 0x1e69a58e0 start + 4
I've tried figuring out what could cause this crash for a few days now, and haven't been able to reproduce it. I don't see any implicit unwraps or optionals here, but sessionId is a non-optional value in the session object if that matters.
I am using swift 4.1, and the crashes occur on on iOS devices running all the different flavours of iOS 10, 11, and 12. The app does support some builds of iOS 9, but none have been reported (although that may be irrelevant because the iOS 9 user base for the app is extremely small)
In Error log it's showing this function getPreviousStatus()
func getPreviousStatus() {
let connect = JsonManger()
let app = UIApplication.shared.delegate as! AppDelegate
let user:User = app.dataManager.gUser
if Reachability.isConnectedToNetwork() {
self.showHUD( msg: "Loading...." )
connect.getLogDetails(baseUrl: user.ClientWeb, email: user.EmailID, password: user.Password, brugerId: user.BrugerID, success: { (res) in
var indud = false
if ( res.object(forKey: "indud") != nil ){
indud = res.object(forKey: "indud") as! Bool
}
if indud {
var isTodo = false
if res.object(forKey: "isToDo") != nil {
isTodo = res.object(forKey: "isToDo") as! Bool
}
if isTodo {
var str = res.object(forKey: "JobId") as! String
let index = str.index(str.startIndex, offsetBy: 1)
str = str.substring(from: index)
let prjId = Int(str)!
let project = app.dataManager.gProject.getProject(id: prjId)
let todoId = res.object(forKey: "TodoId") as! String
let todo = app.dataManager.gTodo.getTodo(id: Int(todoId)!)
self.project = project
self.todoItem = todo
app.dataManager.isCheckedin = true
self.des = res.object(forKey: "JobDescription") as? String
let startTime = res.object(forKey: "Dato2") as! String
DispatchQueue.main.async {
let ud = UserDefaults.standard
ud.set(true, forKey: "isCheckedIn")
ud.set( 1, forKey:"type")
ud.set( self.project.ID!, forKey: "projectId" )
ud.set( self.todoItem.ID! , forKey: "todoId" )
// print(" todo data is : \(self.todoItem.ID!)")
ud.set( self.des, forKey: "des")
ud.set( startTime,forKey: "startTime")
ud.set( startTime, forKey: "checkInTime" )
ud.synchronize()
self.hideHUD()
self.performSegue(withIdentifier: "goStartTodoFromSelect", sender: nil )
}
} else {
var jobId = res.object(forKey: "JobId") as! String
jobId = jobId.replacingOccurrences(of: "P", with: "")
self.des = res.object(forKey: "JobDescription") as? String
let jobCode = app.dataManager.gJobCode.getJobCode(id: Int(jobId)! )
self.jobCodeItem = jobCode
// let chekinTime = res.object(forKey: "Dato2") as! String
let startTime = "2019-05-15T19:45:00"
DispatchQueue.main.async {
app.dataManager.isCheckedin = true
let ud = UserDefaults.standard
ud.set(true, forKey: "isCheckedIn")
ud.set( 0, forKey:"type")
ud.set( jobId, forKey: "jobId" )
ud.set( startTime,forKey: "startTime")
ud.set( startTime, forKey: "checkInTime" )
if res.object(forKey: "JobDescription") != nil {
self.des = res.object(forKey: "JobDescription") as? String
ud.set( self.des, forKey: "des")
}
ud.synchronize()
DispatchQueue.main.async {
self.hideHUD()
self.performSegue(withIdentifier: "goStartJob", sender: nil )
}
}
}
} else {
DispatchQueue.main.async {
self.hideHUD()
// self.popToRoot()
for controller in self.navigationController!.viewControllers as Array {
if controller.isKind(of: SelectJobScreen.self) {
self.navigationController!.popToViewController(controller, animated: true)
break
}
}
}
}
}) { (error) in
DispatchQueue.main.async {
self.hideHUD()
// self.popToRoot()
for controller in self.navigationController!.viewControllers as Array {
if controller.isKind(of: SelectJobScreen.self) {
self.navigationController!.popToViewController(controller, animated: true)
break
}
}
}
}
} else {
print("Record Not Found")
}
}

Answer 1

Inside of that getPreviousStatus() functions getting null values , check it once using debugging
DispatchQueue.main.async {
# mainly in this thread getting error check it once
let ud = UserDefaults.standard
ud.set(true, forKey: "isCheckedIn")
ud.set( 1, forKey:"type")
ud.set( self.project.ID!, forKey: "projectId" )
ud.set( self.todoItem.ID! , forKey: "todoId" )
// print(" todo data is : \(self.todoItem.ID!)")
ud.set( self.des, forKey: "des")
ud.set( startTime,forKey: "startTime")
ud.set( startTime, forKey: "checkInTime" )
ud.synchronize()
self.hideHUD()
self.performSegue(withIdentifier: "goStartTodoFromSelect", sender: nil )
}