Crashed: com.twitter.crashlytics.ios.exception IOS

Question

I'm getting this issue in Crashlytics and, I really don't know what is causing it. It show me that the error is in my AppDelegate, 15 line, but there is where the class beginning:

class AppDelegate: UIResponder, UIApplicationDelegate {

This is the issue:

Fatal Exception: NSInvalidArgumentException Application tried to present modally an active controller RN.ViewController: 0x1509e200.

Crashed: com.twitter.crashlytics.ios.exception SIGABRT ABORT 0x00000000206e6c5c

0 RN CLSProcessRecordAllThreads + 986

1 RN CLSProcessRecordAllThreads + 986

2 RN CLSProcessRecordAllThreads + 722

3 RN CLSHandler + 30

4 RN __CLSExceptionRecord_block_invoke + 66

5 libdispatch.dylib_dispatch_client_callout + 22

6 libdispatch.dylib_dispatch_barrier_sync_f_invoke + 56

7 RN CLSExceptionRecord + 250

8 RN CLSExceptionRecordNSException + 614

9 RN CLSTerminateHandler() + 544

10 libc++abi.dylib std::__terminate(void (*)()) + 78

11 libc++abi.dylib__cxxabiv1::exception_cleanup_func(_Unwind_Reason_Code, _Unwind_Exception*) + 110

12 libobjc.A.dylib objc_exception_throw + 250

13 UIKit-[UIViewController _presentViewController:withAnimationController:completion:] + 4640

14 UIKit__62-[UIViewController presentViewController:animated:completion:]_block_invoke + 336

15 UIKit-[_UIViewControllerTransitionCoordinator _applyBlocks:releaseBlocks:] + 204

16 UIKit-[_UIViewControllerTransitionContext _runAlongsideCompletions] + 128

17 UIKit-[_UIViewControllerTransitionContext completeTransition:] + 108

18 UIKit-[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] + 540

19 UIKit-[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 204

20 UIKit-[UIViewAnimationState animationDidStop:finished:] + 78

21 QuartzCore CA::Layer::run_animation_callbacks(void*) + 252

22 libdispatch.dylib_dispatch_client_callout + 22

23 libdispatch.dylib_dispatch_main_queue_callback_4CF$VARIANT$mp + 1524

24 CoreFoundation CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 8

25 CoreFoundation __CFRunLoopRun + 1574

26 CoreFoundation CFRunLoopRunSpecific + 520

27 CoreFoundation CFRunLoopRunInMode + 108

28 GraphicsServices GSEventRunModal + 160

29 UIKit UIApplicationMain + 144

30 RN AppDelegate.swift line 15

Thank you for your help.

Answer 1

I had a similar issue with iOS 13. I ended up upgrading the Crashlytics library, since the Crashlytics team fixed a few crashes for iOS 13.

Anyone who has these crashes on iOS 13 devices should upgrade Crashlytics to at least version 3.14.0.