CFNetwork.Connection crashed - ios

My iOS app had a crash caused by CFNetwork. I cannot reproduce it. The app was running on iOS 12. I am using Alamofire to perform HTTP requests, but I don't think it was caused by Alamofire. Anyone has any idea?
Crashed: com.apple.CFNetwork.Connection
0 libsystem_kernel.dylib 0x1ba289104 __pthread_kill + 8
1 libsystem_pthread.dylib 0x1ba308a00 pthread_kill$VARIANT$armv81 + 296
2 libsystem_c.dylib 0x1ba1e0d78 abort + 140
3 libsystem_c.dylib 0x1ba1ae67c basename_r + 314
4 CFNetwork 0x1bae63478 invocation function for block in TCPIOConnection::_tlsValidateServerTrust(nw_tls_context*) + 346
5 CFNetwork 0x1bae614e0 TCPIOConnection::_handleTLSEvent(nw_tls_context*, tls_handshake_message_t, void () block_pointer, bool) + 720
6 libnetwork.dylib 0x1bb8716b0 __tcp_connection_set_tls_message_handler_on_nw_connection_block_invoke + 168
7 libboringssl.dylib 0x1bb5e505c __boringssl_context_issue_tls_handshake_callback_block_invoke + 188
8 libdispatch.dylib 0x1ba12b6c8 _dispatch_call_block_and_release + 24
9 libdispatch.dylib 0x1ba12c484 _dispatch_client_callout + 16
10 libdispatch.dylib 0x1ba106fb0 _dispatch_lane_serial_drain$VARIANT$armv81 + 548
11 libdispatch.dylib 0x1ba107b2c _dispatch_lane_invoke$VARIANT$armv81 + 468
12 libdispatch.dylib 0x1ba108d70 _dispatch_workloop_invoke$VARIANT$armv81 + 1892
13 libdispatch.dylib 0x1ba10ff14 _dispatch_workloop_worker_thread + 584
14 libsystem_pthread.dylib 0x1ba30e0f0 _pthread_wqthread + 312
15 libsystem_pthread.dylib 0x1ba310d00 start_wqthread + 4

Related

IOS 11 Application Crashes When PushKit Receive Push While App is Terminated

Our application started to act weird when ios 11 update is released. We are using pushkit to receive push notifications related with incoming call and messages.
While the app is not in the background(in terminated state), when a push notification arrives IOS raises our app and execute didFinishLaunching method than notification arrives to didReceiveIncomingPushWithPayload method
However after updating to IOS 11 we found out that while the app is terminated sometimes we cannot receive notifications and when we checked the crashlogs we saw that app is crashing and as the reason IOS says cpu usage but it succesfully executes didFinishLaunching method(we put logs to the end of the method and they are printed)
We dont know what may cause this problem, does anyone have any idea about the changes in IOS 11 to trigger that problem
Below you can find our crashlog
Incident Identifier: 6ED4EB5C-7E9E-4639-860B-312A48C74F49
CrashReporter Key: cbdfc5f8b24a9e7b992bec953fb095b1909482bc
Hardware Model: iPhone9,1
Process: DTimmmr [4534]
Path: /private/var/containers/Bundle/Application/B3B6FE24-DBCE-4966-9C6D-18778F73E668/DTimmmr.app/DTimmmr
Identifier: com.genband.immmrMagenta
Version: 7.3.3.791 (0.94)
Code Type: ARM-64 (Native)
Role: Non UI
Parent Process: launchd [1]
Coalition: com.genband.immmrMagenta [3863]
Date/Time: 2017-11-06 21:58:45.0631 +0300
Launch Time: 2017-11-06 21:58:39.6223 +0300
OS Version: iPhone OS 11.1 (15B93)
Baseband Version: 3.21.01
Report Version: 104
Exception Type: EXC_CRASH (SIGKILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: Namespace SPRINGBOARD, Code 0x8badf00d
Termination Description: SPRINGBOARD, scene-create watchdog transgression: com.genband.immmrMagenta exhausted CPU time allowance of 3.96 seconds | | Elapsed total CPU time (seconds): 7.920 (user 7.920, system 0.000), 78% CPU | Elapsed application CPU time (seconds): 5.525, 54% CPU |
Triggered by Thread: 0
Filtered syslog:
None found
Thread 0 name: Main Thread Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 CoreUI 0x00000001891f9938 _CUICopySortedKeySignature + 232
1 CoreUI 0x00000001891f9894 _CUICopySortedKeySignature + 68
2 CoreUI 0x00000001891f9c14 CUICopyKeySignatureWithPrefix + 284
3 CoreUI 0x0000000189241680 -[CUIStructuredThemeStore copyKeySignatureForKey:withBytesNoCopy:length:] + 60
4 CoreUI 0x000000018922a0b8 -[CUIMutableStructuredThemeStore renditionWithKey:] + 64
5 CoreUI 0x000000018922a05c -[CUIMutableStructuredThemeStore canGetRenditionWithKey:] + 20
6 CoreUI 0x000000018926d3c0 -[CUICatalog _resolvedRenditionKeyFromThemeRef:withBaseKey:scaleFactor:deviceIdiom:deviceSubtype:displayGamut:layoutDirection:sizeClassHorizontal:sizeClassVertical:memoryClass:graphicsClass:graphicsFallBackOrder:iconSizeIndex:] + 2192
7 CoreUI 0x000000018926cb2c -[CUICatalog _resolvedRenditionKeyForName:scaleFactor:deviceIdiom:deviceSubtype:displayGamut:layoutDirection:sizeClassHorizontal:sizeClassVertical:memoryClass:graphicsClass:graphicsFallBackOrder:withBaseKeySelector:] + 308
8 CoreUI 0x000000018926896c -[CUICatalog _imageWithName:scaleFactor:deviceIdiom:deviceSubtype:displayGamut:layoutDirection:sizeClassHorizontal:sizeClassVertical:memoryClass:graphicsClass:graphicsFallBackOrder:] + 184
9 CoreUI 0x0000000189268acc -[CUICatalog imageWithName:scaleFactor:deviceIdiom:deviceSubtype:displayGamut:layoutDirection:sizeClassHorizontal:sizeClassVertical:memoryClass:graphicsClass:graphicsFallBackOrder:] + 156
10 CoreUI 0x00000001892687a8 -[CUICatalog imageWithName:scaleFactor:deviceIdiom:deviceSubtype:displayGamut:layoutDirection:sizeClassHorizontal:sizeClassVertical:] + 160
11 UIKit 0x000000018bec6a88 -[UIImageAsset imageWithTraitCollection:] + 628
12 UIKit 0x000000018bec7d70 -[_UIPathLazyImageAsset imageWithTraitCollection:] + 400
13 UIKit 0x000000018b4ad594 +[UIImage imageNamed:inBundle:compatibleWithTraitCollection:] + 380
14 UIKit 0x000000018b329160 +[UIImage imageNamed:] + 124
15 DTimmmr 0x000000010465acc8 +[UIStorage loadPixelPreciseImageNamed:] + 3747016 (UIStorage.mm:425)
16 DTimmmr 0x000000010461b2b8 -[WelcomeScreenViewController viewDidLoad] + 3486392 (WelcomeScreenViewController.mm:47)
17 UIKit 0x000000018b208f08 -[UIViewController loadViewIfRequired] + 1040
18 UIKit 0x000000018b2b05f8 -[UINavigationController _updateScrollViewFromViewController:toViewController:] + 76
19 UIKit 0x000000018b2afa98 -[UINavigationController _startTransition:fromViewController:toViewController:] + 196
20 UIKit 0x000000018b2af49c -[UINavigationController _startDeferredTransitionIfNeeded:] + 1168
21 UIKit 0x000000018b2aef18 -[UINavigationController __viewWillLayoutSubviews] + 164
22 UIKit 0x000000018b2aee18 -[UILayoutContainerView layoutSubviews] + 188
23 UIKit 0x000000018b478f74 _runAfterCACommitDeferredBlocks + 292
24 UIKit 0x000000018b46c318 _cleanUpAfterCAFlushAndRunDeferredBlocks + 288
25 UIKit 0x000000018b48418c __34-[UIApplication _firstCommitBlock]_block_invoke_2 + 152
26 CoreFoundation 0x0000000181d7a0fc __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 20
27 CoreFoundation 0x0000000181d799cc __CFRunLoopDoBlocks + 288
28 CoreFoundation 0x0000000181d776dc __CFRunLoopRun + 1068
29 CoreFoundation 0x0000000181c97fb8 CFRunLoopRunSpecific + 436
30 GraphicsServices 0x0000000183b2ff84 GSEventRunModal + 100
31 UIKit 0x000000018b26c2f4 UIApplicationMain + 208
32 DTimmmr 0x00000001042d8038 main + 65592 (main.m:15)
33 libdyld.dylib 0x00000001817ba56c start + 4
Thread 1 name: Dispatch queue: com.apple.CoreLocation.ConnectionClient.0x1c412c620.events
Thread 1:
0 libsystem_kernel.dylib 0x00000001818c8c18 semaphore_timedwait_trap + 8
1 libdispatch.dylib 0x00000001817574d0 _dispatch_sema4_timedwait$VARIANT$mp + 84
2 libdispatch.dylib 0x0000000181757d40 _dispatch_semaphore_wait_slow + 72
3 CoreLocation 0x0000000188326aa8 0x188323000 + 15016
4 CoreLocation 0x000000018832c53c 0x188323000 + 38204
5 CoreLocation 0x000000018832c26c 0x188323000 + 37484
6 CoreLocation 0x0000000188383f58 0x188323000 + 397144
7 CoreLocation 0x000000018838032c 0x188323000 + 381740
8 CoreLocation 0x0000000188380250 0x188323000 + 381520
9 CoreLocation 0x0000000188381ae4 0x188323000 + 387812
10 libxpc.dylib 0x0000000181a367d0 _xpc_connection_call_event_handler + 68
11 libxpc.dylib 0x0000000181a34168 _xpc_connection_mach_event + 984
12 libdispatch.dylib 0x0000000181755118 _dispatch_client_callout4 + 16
13 libdispatch.dylib 0x000000018176b8b8 _dispatch_mach_msg_invoke$VARIANT$mp + 356
14 libdispatch.dylib 0x000000018175ed00 _dispatch_queue_serial_drain$VARIANT$mp + 200
15 libdispatch.dylib 0x000000018176c534 _dispatch_mach_invoke$VARIANT$mp + 952
16 libdispatch.dylib 0x000000018175ed00 _dispatch_queue_serial_drain$VARIANT$mp + 200
17 libdispatch.dylib 0x000000018175f7d8 _dispatch_queue_invoke$VARIANT$mp + 340
18 libdispatch.dylib 0x000000018175ed00 _dispatch_queue_serial_drain$VARIANT$mp + 200
19 libdispatch.dylib 0x000000018175f7d8 _dispatch_queue_invoke$VARIANT$mp + 340
20 libdispatch.dylib 0x0000000181760200 _dispatch_root_queue_drain_deferred_wlh$VARIANT$mp + 400
21 libdispatch.dylib 0x00000001817684a0 _dispatch_workloop_worker_thread$VARIANT$mp + 644
22 libsystem_pthread.dylib 0x00000001819fafd0 _pthread_wqthread + 932
23 libsystem_pthread.dylib 0x00000001819fac20 start_wqthread + 4
Thread 2 name: 7543851008
Thread 2:
0 libsystem_pthread.dylib 0x00000001819fac1c start_wqthread + 0
Thread 3 name: com.apple.uikit.eventfetch-thread
Thread 3:
0 libsystem_kernel.dylib 0x00000001818c8bc4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x00000001818c8a3c mach_msg + 72
2 CoreFoundation 0x0000000181d79c74 __CFRunLoopServiceMachPort + 196
3 CoreFoundation 0x0000000181d77840 __CFRunLoopRun + 1424
4 CoreFoundation 0x0000000181c97fb8 CFRunLoopRunSpecific + 436
5 Foundation 0x00000001826c16e4 -[NSRunLoop+ 50916 (NSRunLoop) runMode:beforeDate:] + 304
6 Foundation 0x00000001826e0afc -[NSRunLoop+ 178940 (NSRunLoop) runUntilDate:] + 96
7 UIKit 0x000000018bdcb2f4 -[UIEventFetcher threadMain] + 136
8 Foundation 0x00000001827c2860 __NSThread__start__ + 996
9 libsystem_pthread.dylib 0x00000001819fc31c _pthread_body + 308
10 libsystem_pthread.dylib 0x00000001819fc1e8 _pthread_body + 0
11 libsystem_pthread.dylib 0x00000001819fac28 thread_start + 4
Thread 4 name: 7619425472 Dispatch queue: com.apple.root.default-qos
Thread 4:
0 libsystem_kernel.dylib 0x00000001818e9150 __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x00000001819fed30 _pthread_cond_wait$VARIANT$mp + 640
2 Foundation 0x00000001826d3b44 -[NSObject+ 125764 (NSThreadPerformAdditions) performSelector:onThread:withObject:waitUntilDone:modes:] + 764
3 Foundation 0x00000001826d7e28 -[NSObject+ 142888 (NSThreadPerformAdditions) performSelectorOnMainThread:withObject:waitUntilDone:] + 144
4 DTimmmr 0x0000000104476f64 -[GsmAddressBookManager _initAddressBookObj] + 1765220 (GsmAddressBookManager.mm:163)
5 DTimmmr 0x000000010447a624 -[GsmAddressBookManager implicitlyLoadAddressBookContacts] + 1779236 (GsmAddressBookManager.mm:892)
6 DTimmmr 0x0000000104a1d924 -[NSObject(DebounceSelector) debounceSelector:object:timeout:] + 7690532 (NSObject+DebounceSelector.m:78)
7 DTimmmr 0x0000000104a1d6b0 -[NSObject(DebounceSelector) debounceSelector:timeout:] + 7689904 (NSObject+DebounceSelector.m:56)
8 DTimmmr 0x000000010447a594 -[GsmAddressBookManager loadAddressBookContacts] + 1779092 (GsmAddressBookManager.mm:879)
9 DTimmmr 0x000000010447a264 __53-[GsmAddressBookManager asyncLoadAddressBookContacts]_block_invoke + 1778276 (GsmAddressBookManager.mm:864)
10 libdispatch.dylib 0x0000000181755088 _dispatch_call_block_and_release + 24
11 libdispatch.dylib 0x0000000181755048 _dispatch_client_callout + 16
12 libdispatch.dylib 0x000000018175c090 _dispatch_queue_override_invoke$VARIANT$mp + 716
13 libdispatch.dylib 0x00000001817621c8 _dispatch_root_queue_drain + 596
14 libdispatch.dylib 0x0000000181761f10 _dispatch_worker_thread3 + 120
15 libsystem_pthread.dylib 0x00000001819fb120 _pthread_wqthread + 1268
16 libsystem_pthread.dylib 0x00000001819fac20 start_wqthread + 4
Thread 5 name: 7619384576 Dispatch queue: com.apple.root.user-initiated-qos
Thread 5:
0 libsystem_platform.dylib 0x00000001819f7f0c DYLD-STUB$$OSAtomicAdd32 + 0
1 CoreFoundation 0x0000000181de214c -[_CFXNotificationRegistrar add:object:observer:tokenRegistration:] + 460
2 CoreFoundation 0x0000000181ca3d94 _CFXNotificationRegisterObserver + 1332
3 Foundation 0x00000001826b8530 -[NSNotificationCenter addObserver:selector:name:object:] + 392
4 DTimmmr 0x0000000104622010 -[Contact initWithFirstName:andLastName:andDisplayName:] + 3514384 (Contact.mm:116)
5 DTimmmr 0x0000000104627c94 +[Contact contactWithDictionary:] + 3538068 (Contact.mm:906)
6 DTimmmr 0x0000000104479f0c -[GsmAddressBookManager _getCachedContactsFromArray:] + 1777420 (GsmAddressBookManager.mm:841)
7 DTimmmr 0x000000010447a10c __58-[GsmAddressBookManager _asyncGetCachedContactsFromArray:]_block_invoke + 1777932 (GsmAddressBookManager.mm:856)
8 libdispatch.dylib 0x0000000181755088 _dispatch_call_block_and_release + 24
9 libdispatch.dylib 0x0000000181755048 _dispatch_client_callout + 16
10 libdispatch.dylib 0x0000000181762378 _dispatch_root_queue_drain + 1028
11 libdispatch.dylib 0x0000000181761f10 _dispatch_worker_thread3 + 120
12 libsystem_pthread.dylib 0x00000001819fb120 _pthread_wqthread + 1268
13 libsystem_pthread.dylib 0x00000001819fac20 start_wqthread + 4
Thread 6 name: AVAudioSession Notify Thread
Thread 6:
0 libsystem_kernel.dylib 0x00000001818c8bc4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x00000001818c8a3c mach_msg + 72
2 CoreFoundation 0x0000000181d79c74 __CFRunLoopServiceMachPort + 196
3 CoreFoundation 0x0000000181d77840 __CFRunLoopRun + 1424
4 CoreFoundation 0x0000000181c97fb8 CFRunLoopRunSpecific + 436
5 AVFAudio 0x0000000187580774 GenericRunLoopThread::Entry+ 542580 (void*) + 164
6 AVFAudio 0x00000001875ab018 CAPThread::Entry+ 716824 (CAPThread*) + 84
7 libsystem_pthread.dylib 0x00000001819fc31c _pthread_body + 308
8 libsystem_pthread.dylib 0x00000001819fc1e8 _pthread_body + 0
9 libsystem_pthread.dylib 0x00000001819fac28 thread_start + 4
Thread 7 name: Thread 0x0x127d240a0
Thread 7:
0 libsystem_kernel.dylib 0x00000001818e9570 __select + 8
1 DTimmmr 0x0000000104f26148 rtc::PhysicalSocketServer::Wait+ 12968264 (int, bool) + 696
2 DTimmmr 0x0000000104f1706c rtc::MessageQueue::Get+ 12906604 (rtc::Message*, int, bool) + 1064
3 DTimmmr 0x0000000104f2fc1c rtc::Thread::ProcessMessages+ 13007900 (int) + 120
4 DTimmmr 0x0000000104f2fb84 rtc::Thread::PreRun+ 13007748 (void*) + 104
5 libsystem_pthread.dylib 0x00000001819fc31c _pthread_body + 308
6 libsystem_pthread.dylib 0x00000001819fc1e8 _pthread_body + 0
7 libsystem_pthread.dylib 0x00000001819fac28 thread_start + 4
Thread 8 name: Thread 0x0x127d24240
Thread 8:
0 libsystem_kernel.dylib 0x00000001818e9150 __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x00000001819fed30 _pthread_cond_wait$VARIANT$mp + 640
2 DTimmmr 0x0000000104ef92e8 rtc::Event::Wait+ 12784360 (int) + 244
3 DTimmmr 0x0000000104f1dae4 rtc::NullSocketServer::Wait+ 12933860 (int, bool) + 16
4 DTimmmr 0x0000000104f1706c rtc::MessageQueue::Get+ 12906604 (rtc::Message*, int, bool) + 1064
5 DTimmmr 0x0000000104f2fc1c rtc::Thread::ProcessMessages+ 13007900 (int) + 120
6 DTimmmr 0x0000000104f2fb84 rtc::Thread::PreRun+ 13007748 (void*) + 104
7 libsystem_pthread.dylib 0x00000001819fc31c _pthread_body + 308
8 libsystem_pthread.dylib 0x00000001819fc1e8 _pthread_body + 0
9 libsystem_pthread.dylib 0x00000001819fac28 thread_start + 4
Thread 9 name: Thread 0x0x127d243e0
Thread 9:
0 libsystem_kernel.dylib 0x00000001818e9150 __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x00000001819fed30 _pthread_cond_wait$VARIANT$mp + 640
2 DTimmmr 0x0000000104ef92e8 rtc::Event::Wait+ 12784360 (int) + 244
3 DTimmmr 0x0000000104f1dae4 rtc::NullSocketServer::Wait+ 12933860 (int, bool) + 16
4 DTimmmr 0x0000000104f1706c rtc::MessageQueue::Get+ 12906604 (rtc::Message*, int, bool) + 1064
5 DTimmmr 0x0000000104f2fce8 rtc::Thread::ProcessMessages+ 13008104 (int) + 324
6 DTimmmr 0x0000000104f2fb84 rtc::Thread::PreRun+ 13007748 (void*) + 104
7 libsystem_pthread.dylib 0x00000001819fc31c _pthread_body + 308
8 libsystem_pthread.dylib 0x00000001819fc1e8 _pthread_body + 0
9 libsystem_pthread.dylib 0x00000001819fac28 thread_start + 4
Thread 10 name: VoiceProcessThread
Thread 10:
0 libsystem_kernel.dylib 0x00000001818e9150 __psynch_cvwait + 8
1 libsystem_pthread.dylib 0x00000001819fed30 _pthread_cond_wait$VARIANT$mp + 640
2 DTimmmr 0x0000000104ef92b8 rtc::Event::Wait+ 12784312 (int) + 196
3 DTimmmr 0x0000000104f089d4 webrtc::EventWrapperImpl::Wait+ 12847572 (unsigned long) + 16
4 DTimmmr 0x00000001051839d0 webrtc::ProcessThreadImpl::Process+ 15448528 () + 876
5 DTimmmr 0x0000000104efa06c rtc::PlatformThread::Run+ 12787820 () + 400
6 DTimmmr 0x0000000104ef9ed0 rtc::PlatformThread::StartThread+ 12787408 (void*) + 12
7 libsystem_pthread.dylib 0x00000001819fc31c _pthread_body + 308
8 libsystem_pthread.dylib 0x00000001819fc1e8 _pthread_body + 0
9 libsystem_pthread.dylib 0x00000001819fac28 thread_start + 4
Thread 11 name: 7548104896
Thread 11:
0 libsystem_pthread.dylib 0x00000001819fac1c start_wqthread + 0
Thread 12 name: 7617291584 Dispatch queue: WebRequestsOperationQueue (QOS: UNSPECIFIED)
Thread 12:
0 libsystem_kernel.dylib 0x00000001818ea800 kevent_id + 8
1 libdispatch.dylib 0x00000001817708f8 _dispatch_kq_poll + 204
2 libdispatch.dylib 0x00000001817712c0 _dispatch_event_loop_wait_for_ownership$VARIANT$mp + 432
3 libdispatch.dylib 0x0000000181763018 _dispatch_sync_wait + 416
4 DTimmmr 0x0000000104a84d74 -[DDLog queueLogMessage:asynchronously:] + 8113524 (DDLog.m:370)
5 DTimmmr 0x0000000104a85438 -[DDLog log:message:level:flag:context:file:function:line:tag:] + 8115256 (DDLog.m:510)
6 DTimmmr 0x0000000104a852d4 +[DDLog log:message:level:flag:context:file:function:line:tag:] + 8114900 (DDLog.m:0)
7 DTimmmr 0x0000000104a84f1c +[DDLog log:level:flag:context:file:function:line:tag:format:] + 8113948 (DDLog.m:403)
8 DTimmmr 0x00000001045de72c +[FSPLogger logAsync:level:flag:context:tag:function:format:] + 3237676 (FSPLogger.m:89)
9 DTimmmr 0x00000001047f0ebc -[KandySDKLogger logWithLevel:andLogString:] + 5410492 (KandySDKLogger.m:37)
10 DTimmmr 0x0000000104da4724 -[KandyLoggerMediator logWithDate:andThreadName:andLevel:andFileName:andLine:andMethodName:andLogString:] + 508
11 DTimmmr 0x0000000104dc9af4 -[KandyBaseWebRequestOperation connection:didReceiveResponse:] + 380
12 CFNetwork 0x00000001825a9d48 __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 60
13 CFNetwork 0x00000001825a9cec -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 204
14 CFNetwork 0x00000001825a9e60 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 56
15 CFNetwork 0x0000000182564f60 _NSURLConnectionDidReceiveResponse+ 2170720 (_CFURLConnection*, _CFURLResponse*, void const*) + 84
16 CFNetwork 0x00000001824b402c invocation function for block in URLConnectionClient_Classic::_delegate_didReceiveResponse+ 1445932 (_CFURLResponse*) + 108
17 CFNetwork 0x00000001824af9d0 invocation function for block in URLConnectionClient_Classic::_withDelegateAsync(char const*, void + 1427920 (_CFURLConnection*, CFURLConnectionClientCurrent_VMax const*) block_pointer) + 108
18 libdispatch.dylib 0x0000000181755048 _dispatch_client_callout + 16
19 libdispatch.dylib 0x000000018175c6c8 _dispatch_block_invoke_direct$VARIANT$mp + 288
20 CFNetwork 0x0000000182581f94 RunloopBlockContext::_invoke_block+ 2289556 (void const*, void*) + 36
21 CoreFoundation 0x0000000181c97900 CFArrayApplyFunction + 80
22 CFNetwork 0x0000000182581e58 RunloopBlockContext::perform+ 2289240 () + 128
23 CFNetwork 0x00000001825831d8 MultiplexerSource::perform+ 2294232 () + 312
24 CFNetwork 0x0000000182582f38 MultiplexerSource::_perform+ 2293560 (void*) + 60
25 CoreFoundation 0x0000000181d7a2e8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
26 CoreFoundation 0x0000000181d7a268 __CFRunLoopDoSource0 + 88
27 CoreFoundation 0x0000000181d79af0 __CFRunLoopDoSources0 + 204
28 CoreFoundation 0x0000000181d776c8 __CFRunLoopRun + 1048
29 CoreFoundation 0x0000000181c97fb8 CFRunLoopRunSpecific + 436
30 CoreFoundation 0x0000000181ce7098 CFRunLoopRun + 116
31 DTimmmr 0x0000000104dc85c0 -[KandyBaseWebRequestOperation start] + 680
32 Foundation 0x000000018279f004 __NSOQSchedule_f + 404
33 libdispatch.dylib 0x0000000181755048 _dispatch_client_callout + 16
34 libdispatch.dylib 0x000000018175d3d4 _dispatch_continuation_pop$VARIANT$mp + 428
35 libdispatch.dylib 0x000000018175bcd4 _dispatch_async_redirect_invoke$VARIANT$mp + 604
36 libdispatch.dylib 0x00000001817621c8 _dispatch_root_queue_drain + 596
37 libdispatch.dylib 0x0000000181761f10 _dispatch_worker_thread3 + 120
38 libsystem_pthread.dylib 0x00000001819fb120 _pthread_wqthread + 1268
39 libsystem_pthread.dylib 0x00000001819fac20 start_wqthread + 4
Thread 13 name: com.squareup.SocketRocket.NetworkThread
Thread 13:
0 libsystem_kernel.dylib 0x00000001818c8bc4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x00000001818c8a3c mach_msg + 72
2 CoreFoundation 0x0000000181d79c74 __CFRunLoopServiceMachPort + 196
3 CoreFoundation 0x0000000181d77840 __CFRunLoopRun + 1424
4 CoreFoundation 0x0000000181c97fb8 CFRunLoopRunSpecific + 436
5 Foundation 0x00000001826c16e4 -[NSRunLoop+ 50916 (NSRunLoop) runMode:beforeDate:] + 304
6 DTimmmr 0x000000010534bba8 -[_SRRunLoopThread main] + 252
7 Foundation 0x00000001827c2860 __NSThread__start__ + 996
8 libsystem_pthread.dylib 0x00000001819fc31c _pthread_body + 308
9 libsystem_pthread.dylib 0x00000001819fc1e8 _pthread_body + 0
10 libsystem_pthread.dylib 0x00000001819fac28 thread_start + 4
Thread 14 name: com.apple.NSURLConnectionLoader
Thread 14:
0 libsystem_kernel.dylib 0x00000001818c8bc4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x00000001818c8a3c mach_msg + 72
2 CoreFoundation 0x0000000181d79c74 __CFRunLoopServiceMachPort + 196
3 CoreFoundation 0x0000000181d77840 __CFRunLoopRun + 1424
4 CoreFoundation 0x0000000181c97fb8 CFRunLoopRunSpecific + 436
5 CFNetwork 0x0000000182402264 +[NSURLConnection+ 717412 (Loader) _resourceLoadLoop:] + 404
6 Foundation 0x00000001827c2860 __NSThread__start__ + 996
7 libsystem_pthread.dylib 0x00000001819fc31c _pthread_body + 308
8 libsystem_pthread.dylib 0x00000001819fc1e8 _pthread_body + 0
9 libsystem_pthread.dylib 0x00000001819fac28 thread_start + 4
Thread 15 name: 7617336192 Dispatch queue: cocoa.lumberjack
Thread 15:
0 libsystem_kernel.dylib 0x00000001818c8c00 semaphore_wait_trap + 8
1 libdispatch.dylib 0x00000001817573d4 _dispatch_sema4_wait$VARIANT$mp + 24
2 libdispatch.dylib 0x0000000181758328 _dispatch_group_wait_slow + 196
3 DTimmmr 0x0000000104a86840 -[DDLog lt_log:] + 8120384 (DDLog.m:844)
4 DTimmmr 0x0000000104a84dd0 __40-[DDLog queueLogMessage:asynchronously:]_block_invoke + 8113616 (DDLog.m:362)
5 libdispatch.dylib 0x0000000181755048 _dispatch_client_callout + 16
6 libdispatch.dylib 0x000000018175dae8 _dispatch_queue_barrier_sync_invoke_and_complete + 56
7 DTimmmr 0x0000000104a84d74 -[DDLog queueLogMessage:asynchronously:] + 8113524 (DDLog.m:370)
8 DTimmmr 0x0000000104a85438 -[DDLog log:message:level:flag:context:file:function:line:tag:] + 8115256 (DDLog.m:510)
9 DTimmmr 0x0000000104a852d4 +[DDLog log:message:level:flag:context:file:function:line:tag:] + 8114900 (DDLog.m:0)
10 DTimmmr 0x0000000104a84f1c +[DDLog log:level:flag:context:file:function:line:tag:format:] + 8113948 (DDLog.m:403)
11 DTimmmr 0x00000001045de72c +[FSPLogger logAsync:level:flag:context:tag:function:format:] + 3237676 (FSPLogger.m:89)
12 DTimmmr 0x00000001047f0ebc -[KandySDKLogger logWithLevel:andLogString:] + 5410492 (KandySDKLogger.m:37)
13 DTimmmr 0x0000000104da4724 -[KandyLoggerMediator logWithDate:andThreadName:andLevel:andFileName:andLine:andMethodName:andLogString:] + 508
14 DTimmmr 0x0000000104dc9af4 -[KandyBaseWebRequestOperation connection:didReceiveResponse:] + 380
15 CFNetwork 0x00000001825a9d48 __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 60
16 CFNetwork 0x00000001825a9cec -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 204
17 CFNetwork 0x00000001825a9e60 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 56
18 CFNetwork 0x0000000182564f60 _NSURLConnectionDidReceiveResponse+ 2170720 (_CFURLConnection*, _CFURLResponse*, void const*) + 84
19 CFNetwork 0x00000001824b402c invocation function for block in URLConnectionClient_Classic::_delegate_didReceiveResponse+ 1445932 (_CFURLResponse*) + 108
20 CFNetwork 0x00000001824af9d0 invocation function for block in URLConnectionClient_Classic::_withDelegateAsync(char const*, void + 1427920 (_CFURLConnection*, CFURLConnectionClientCurrent_VMax const*) block_pointer) + 108
21 libdispatch.dylib 0x0000000181755048 _dispatch_client_callout + 16
22 libdispatch.dylib 0x000000018175c6c8 _dispatch_block_invoke_direct$VARIANT$mp + 288
23 CFNetwork 0x0000000182581f94 RunloopBlockContext::_invoke_block+ 2289556 (void const*, void*) + 36
24 CoreFoundation 0x0000000181c97900 CFArrayApplyFunction + 80
25 CFNetwork 0x0000000182581e58 RunloopBlockContext::perform+ 2289240 () + 128
26 CFNetwork 0x00000001825831d8 MultiplexerSource::perform+ 2294232 () + 312
27 CFNetwork 0x0000000182582f38 MultiplexerSource::_perform+ 2293560 (void*) + 60
28 CoreFoundation 0x0000000181d7a2e8
We found out that, in ios11 apple reduces the time that is needed to start the application while the app is in background(In our case it was 2.9 seconds), so when you go beyond it, app is automaticaly killed by IOS.
So we find the solution as minimizing the loading times (such as minimizing the splash screens etc..) and also removing the codes which is not neccesarily need to work on background. And we made our app to launch at 1.8 seconds than crash problem is resolved

react native ios apps crash at _dispatch_barrier_sync_f_slow

My app have used React Native. Now have a crash as below
Thread 10 Crashed:
0 libdispatch.dylib _dispatch_barrier_sync_f_slow + 596
1 bee _GLOBAL__I_a + 27144
2 bee _GLOBAL__I_a + 29912
3 libsystem_blocks.dylib _Block_release + 144
4 libdispatch.dylib _dispatch_client_callout + 16
5 libdispatch.dylib _dispatch_queue_concurrent_drain + 1384
6 libdispatch.dylib _dispatch_queue_invoke + 660
7 libdispatch.dylib _dispatch_queue_override_invoke + 360
8 libdispatch.dylib _dispatch_root_queue_drain + 572
9 libdispatch.dylib _dispatch_worker_thread3 + 124
10 libsystem_pthread.dylib _pthread_wqthread + 1288
11 libsystem_pthread.dylib start_wqthread + 4
Any one have idea about this crash? I even don't know when and where happen this crash.

CFNetwork is crashed in iOS 7

Application is crashed sometimes with such trace, I can't reproduce it.
Thread 16 Crashed:
0 libobjc.A.dylib 0x3b0f4b26 objc_msgSend + 6
1 CFNetwork 0x308d9491 -[__NSCFLocalSessionTask setConnection:] + 718
2 CFNetwork 0x30933c33 -[__NSCFLocalSessionBridge taskTerminating:] + 136
3 CFNetwork 0x30932945 __64-[__NSCFLocalSessionBridge initWithConfiguration:session:queue:]_block_invoke + 46
4 CFNetwork 0x30950b03 ___ZNK24ClassicConnectionSession28_connection_didFinishLoadingEP16_CFURLConnection_block_invoke + 96
5 libdispatch.dylib 0x3b5dcd1b _dispatch_call_block_and_release + 8
6 libdispatch.dylib 0x3b5e3273 _dispatch_queue_drain$VARIANT$mp + 372
7 libdispatch.dylib 0x3b5e306b _dispatch_queue_invoke$VARIANT$mp + 40
8 libdispatch.dylib 0x3b5e3ce1 _dispatch_root_queue_drain + 74
9 libdispatch.dylib 0x3b5e3f59 _dispatch_worker_thread2 + 54
10 libsystem_pthread.dylib 0x3b71edbf _pthread_wqthread + 296
11 libsystem_pthread.dylib 0x3b71ec84 start_wqthread + 6

-(id)init method-app crashes

I have used Crashlytics to catch errors in my application. Sometimes app is crashing and Crashlytics says that the error is in following code block.I have declared all variables in .h file.
-(id)init
{
if ( self = [super init] ) {
_currentTemperature=#"";
_currentHumidity=#"";
_currentWindSpeed=#"";
_currentStatus=#"";
self.weeklyMinTemperature=[[NSMutableArray alloc]init];
self.weeklyMaxTemperature=[[NSMutableArray alloc]init];
self.weeklyHumidity=[[NSMutableArray alloc]init];
self.hourlySummary=[[NSMutableArray alloc]init];
}
return self;
}
The error log is like following.
EXC_BAD_ACCESS_KERN_INVALID ADDRESS
#6. Crashed: com.apple.UNSNotificationSchedulerConnection
0 libobjc.A.dylib 0x182ae1b90 objc_msgSend + 16
1 Foundation 0x183d517a8 -[NSXPCEncoder _encodeObject:] + 484
2 UIKit 0x188c8b1ec -[UIConcreteLocalNotification encodeWithCoder:] + 84
3 Foundation 0x183d51870 -[NSXPCEncoder _encodeObject:] + 684
4 Foundation 0x183dbad48 -[NSXPCEncoder _encodeArrayOfObjects:forKey:] + 264
5 Foundation 0x183d51870 -[NSXPCEncoder _encodeObject:] + 684
6 Foundation 0x183d51d58 encodeInvocationArguments + 320
7 Foundation 0x183d51a18 -[NSXPCEncoder encodeInvocation:] + 368
8 Foundation 0x183d51870 -[NSXPCEncoder _encodeObject:] + 684
9 Foundation 0x183f27d64 -[NSXPCConnection _sendInvocation:withProxy:remoteInterface:withErrorHandler:timeout:userInfo:] + 2328
10 CoreFoundation 0x18346ea1c ___forwarding___ + 408
11 CoreFoundation 0x18336cc5c _CF_forwarding_prep_0 + 92
12 libdispatch.dylib 0x182eb54bc _dispatch_call_block_and_release + 24
13 libdispatch.dylib 0x182eb547c _dispatch_client_callout + 16
14 libdispatch.dylib 0x182ec14c0 _dispatch_queue_drain + 864
15 libdispatch.dylib 0x182eb8f80 _dispatch_queue_invoke + 464
16 libdispatch.dylib 0x182eb547c _dispatch_client_callout + 16
17 libdispatch.dylib 0x182ec3914 _dispatch_root_queue_drain + 2140
18 libdispatch.dylib 0x182ec30b0 _dispatch_worker_thread3 + 112
19 libsystem_pthread.dylib 0x1830cd470 _pthread_wqthread + 1092
20 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
--
#0. com.apple.main-thread
0 libsystem_kernel.dylib 0x182febea8 read + 8
1 Foundation 0x183d73f0c _NSReadFromFileDescriptorWithProgress + 228
2 Foundation 0x183d73cec _NSReadBytesFromFileWithExtendedAttributes + 676
3 Foundation 0x183d739f8 -[NSData(NSData) initWithContentsOfFile:] + 80
4 GeoServices 0x189e8ec2c -[GEOResourceManifestManager _loadActiveTileGroupIfNecessary:] + 240
5 GeoServices 0x189d2f3e8 GEOURLWorldDefaultURLStringWithSource + 164
6 GeoServices 0x189d43658 _GEOURLStringWithSource + 56
7 GeoServices 0x189e0d824 +[GEOLocationShifter isLocationShiftRequiredForCoordinate:] + 72
8 GeoServices 0x189e7c970 -[_GEOReverseGeocodeRequestTicket submitWithHandler:networkActivity:] + 168
9 CoreLocation 0x18a1f3eb4 (null) + 32576
10 libdispatch.dylib 0x182eb54bc _dispatch_call_block_and_release + 24
11 libdispatch.dylib 0x182eb547c _dispatch_client_callout + 16
12 libdispatch.dylib 0x182ebab84 _dispatch_main_queue_callback_4CF + 1844
13 CoreFoundation 0x183420d50 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12
14 CoreFoundation 0x18341ebb8 __CFRunLoopRun + 1628
15 CoreFoundation 0x183348c50 CFRunLoopRunSpecific + 384
16 GraphicsServices 0x184c30088 GSEventRunModal + 180
17 UIKit 0x188632088 UIApplicationMain + 204
18 AgileblazeWeather 0x100053b78 main (main.m:14)
19 libdispatch.dylib 0x182ee68b8 (Missing)
#1. com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x1830054d8 kevent_qos + 8
1 libdispatch.dylib 0x182ec87d8 _dispatch_mgr_invoke + 232
2 libdispatch.dylib 0x182eb7648 _dispatch_source_invoke + 50
#2. Thread
0 libsystem_kernel.dylib 0x183004b48 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1830cd530 _pthread_wqthread + 1284
2 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
#3. com.apple.CoreLocation.ConnectionClient.0x1446aa130.events
0 libsystem_kernel.dylib 0x182fe902c semaphore_timedwait_trap + 8
1 libdispatch.dylib 0x182ec6394 _dispatch_semaphore_wait_slow + 160
2 CoreLocation 0x18a1bad4c (null) + 628
3 CoreLocation 0x18a1bf804 (null) + 1176
4 CoreLocation 0x18a1fac44 (null) + 60624
5 CoreLocation 0x18a1f8898 (null) + 51492
6 CoreLocation 0x18a1f87cc (null) + 51288
7 CoreLocation 0x18a1f9a18 (null) + 55972
8 libxpc.dylib 0x183100f68 _xpc_connection_call_event_handler + 68
9 libxpc.dylib 0x1830fed10 _xpc_connection_mach_event + 2132
10 libdispatch.dylib 0x182eb5578 _dispatch_client_callout4 + 16
11 libdispatch.dylib 0x182eb9864 _dispatch_mach_msg_invoke + 656
12 libdispatch.dylib 0x182ec1694 _dispatch_queue_drain + 1332
13 libdispatch.dylib 0x182eb8978 _dispatch_mach_invoke + 600
14 libdispatch.dylib 0x182ec1694 _dispatch_queue_drain + 1332
15 libdispatch.dylib 0x182eb8f80 _dispatch_queue_invoke + 464
16 libdispatch.dylib 0x182ec1694 _dispatch_queue_drain + 1332
17 libdispatch.dylib 0x182eb8f80 _dispatch_queue_invoke + 464
18 libdispatch.dylib 0x182eb547c _dispatch_client_callout + 16
19 libdispatch.dylib 0x182ec3914 _dispatch_root_queue_drain + 2140
20 libdispatch.dylib 0x182ec30b0 _dispatch_worker_thread3 + 112
21 libsystem_pthread.dylib 0x1830cd470 _pthread_wqthread + 1092
22 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
#4. com.apple.NSXPCConnection.m-user.com.apple.usernotification.notificationscheduler
0 libsystem_kernel.dylib 0x182fe8fd8 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x182fe8e54 mach_msg + 72
2 libxpc.dylib 0x18311314c xpc_pipe_routine + 256
3 libxpc.dylib 0x183105f18 _xpc_interface_routine + 200
4 libxpc.dylib 0x1831062f0 _xpc_look_up_endpoint + 224
5 libxpc.dylib 0x1830ffc60 _xpc_connection_bootstrap_look_up_slow + 212
6 libxpc.dylib 0x1830ff958 _xpc_connection_init + 536
7 libxpc.dylib 0x1830ff730 _xpc_connection_resume_init + 20
8 libdispatch.dylib 0x182eb547c _dispatch_client_callout + 16
9 libdispatch.dylib 0x182ec14c0 _dispatch_queue_drain + 864
10 libdispatch.dylib 0x182eb8f80 _dispatch_queue_invoke + 464
11 libdispatch.dylib 0x182eb547c _dispatch_client_callout + 16
12 libdispatch.dylib 0x182ec3914 _dispatch_root_queue_drain + 2140
13 libdispatch.dylib 0x182ec30b0 _dispatch_worker_thread3 + 112
14 libsystem_pthread.dylib 0x1830cd470 _pthread_wqthread + 1092
15 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
#5. Thread
0 libsystem_kernel.dylib 0x183004b48 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1830cd530 _pthread_wqthread + 1284
2 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
#6. Crashed: com.apple.UNSNotificationSchedulerConnection
0 libobjc.A.dylib 0x182ae1b90 objc_msgSend + 16
1 Foundation 0x183d517a8 -[NSXPCEncoder _encodeObject:] + 484
2 UIKit 0x188c8b1ec -[UIConcreteLocalNotification encodeWithCoder:] + 84
3 Foundation 0x183d51870 -[NSXPCEncoder _encodeObject:] + 684
4 Foundation 0x183dbad48 -[NSXPCEncoder _encodeArrayOfObjects:forKey:] + 264
5 Foundation 0x183d51870 -[NSXPCEncoder _encodeObject:] + 684
6 Foundation 0x183d51d58 encodeInvocationArguments + 320
7 Foundation 0x183d51a18 -[NSXPCEncoder encodeInvocation:] + 368
8 Foundation 0x183d51870 -[NSXPCEncoder _encodeObject:] + 684
9 Foundation 0x183f27d64 -[NSXPCConnection _sendInvocation:withProxy:remoteInterface:withErrorHandler:timeout:userInfo:] + 2328
10 CoreFoundation 0x18346ea1c ___forwarding___ + 408
11 CoreFoundation 0x18336cc5c _CF_forwarding_prep_0 + 92
12 libdispatch.dylib 0x182eb54bc _dispatch_call_block_and_release + 24
13 libdispatch.dylib 0x182eb547c _dispatch_client_callout + 16
14 libdispatch.dylib 0x182ec14c0 _dispatch_queue_drain + 864
15 libdispatch.dylib 0x182eb8f80 _dispatch_queue_invoke + 464
16 libdispatch.dylib 0x182eb547c _dispatch_client_callout + 16
17 libdispatch.dylib 0x182ec3914 _dispatch_root_queue_drain + 2140
18 libdispatch.dylib 0x182ec30b0 _dispatch_worker_thread3 + 112
19 libsystem_pthread.dylib 0x1830cd470 _pthread_wqthread + 1092
20 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
#7. com.twitter.crashlytics.ios.MachExceptionServer
0 AgileblazeWeather 0x10006c74c CLSProcessRecordAllThreads + 4295460684
1 AgileblazeWeather 0x10006c74c CLSProcessRecordAllThreads + 4295460684
2 AgileblazeWeather 0x10006cb6c CLSProcessRecordAllThreads + 4295461740
3 AgileblazeWeather 0x10005d82c CLSHandler + 4295399468
4 AgileblazeWeather 0x1000589b0 CLSMachExceptionServer + 4295379376
5 libsystem_pthread.dylib 0x1830cfb28 _pthread_body + 156
6 libsystem_pthread.dylib 0x1830cfa8c _pthread_body + 154
7 libsystem_pthread.dylib 0x1830cd028 thread_start + 4
#8. com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x182fe8fd8 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x182fe8e54 mach_msg + 72
2 CoreFoundation 0x183420c60 __CFRunLoopServiceMachPort + 196
3 CoreFoundation 0x18341e964 __CFRunLoopRun + 1032
4 CoreFoundation 0x183348c50 CFRunLoopRunSpecific + 384
5 CFNetwork 0x183ac9bcc +[NSURLConnection(Loader) _resourceLoadLoop:] + 412
6 Foundation 0x183e3fe4c __NSThread__start__ + 1000
7 libsystem_pthread.dylib 0x1830cfb28 _pthread_body + 156
8 libsystem_pthread.dylib 0x1830cfa8c _pthread_body + 154
9 libsystem_pthread.dylib 0x1830cd028 thread_start + 4
#9. Thread
0 libsystem_kernel.dylib 0x183004b48 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1830cd530 _pthread_wqthread + 1284
2 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
#10. Thread
0 libsystem_kernel.dylib 0x183004b48 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1830cd530 _pthread_wqthread + 1284
2 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
#11. Thread
0 libsystem_kernel.dylib 0x183004b48 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1830cd530 _pthread_wqthread + 1284
2 libsystem_pthread.dylib 0x1830cd020 start_wqthread + 4
#12. com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x183004344 __select + 8
1 CoreFoundation 0x1834271c8 __CFSocketManager + 648
2 libsystem_pthread.dylib 0x1830cfb28 _pthread_body + 156
3 libsystem_pthread.dylib 0x1830cfa8c _pthread_body + 154
4 libsystem_pthread.dylib 0x1830cd028 thread_start + 4
What is the reason for this type of crash?Is there any mistake in my code block?

Iphone Debugging

I am getting the below error for swift app i made for IOS. I had setup notification using this example. How do I debug this and know what the issue is?
Crashed: com.apple.UNSNotificationRegistrarConnection
EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000013000001328
Crashed: com.apple.UNSNotificationRegistrarConnection
0 libobjc.A.dylib 0x180cf9b9c objc_msgSend + 28
1 UserNotificationServices 0x183038b54 __destroy_helper_block_27 + 40
2 libsystem_blocks.dylib 0x1811298e8 _Block_release + 156
3 libdispatch.dylib 0x1810cd47c _dispatch_client_callout + 16
4 libdispatch.dylib 0x1810d94c0 _dispatch_queue_drain + 864
5 libdispatch.dylib 0x1810d0f80 _dispatch_queue_invoke + 464
6 libdispatch.dylib 0x1810cd47c _dispatch_client_callout + 16
7 libdispatch.dylib 0x1810db914 _dispatch_root_queue_drain + 2140
8 libdispatch.dylib 0x1810db0b0 _dispatch_worker_thread3 + 112
9 libsystem_pthread.dylib 0x1812e5470 _pthread_wqthread + 1092
10 libsystem_pthread.dylib 0x1812e5020 start_wqthread + 4

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