Hello fellow ios devs.After ios 13 we see lots of crashes related with keyboard. We only see this from crash reporting and can never reproduce it.We suspect it is related to keyboard since there is referances to keyboard methods in call stack. Here is the crash report coming from Fabric:Fatal Exception: NSInternalInconsistencyException 0 CoreFoundation 0x1a96a898c __exceptionPreprocess 1 libobjc.A.dylib 0x1a93d10a4 objc_exception_throw 2 CoreFoundation 0x1a95aad1c +[_CFXNotificationTokenRegistration keyCallbacks] 3 Foundation 0x1a99e08f4 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] 4 UIKitCore 0x1ada67a3c __120-[UIView(UIConstraintBasedLayout) _layoutEngine_didAddLayoutConstraint:roundingAdjustment:mutuallyExclusiveConstraints:]_block_invoke_2 5 UIKitCore 0x1ada676e8 -[UIView(UIConstraintBasedLayout) _layoutEngine_didAddLayoutConstraint:roundingAdjustment:mutuallyExclusiveConstraints:] 6 UIKitCore 0x1ada67be0 -[UIView(UIConstraintBasedLayout) _tryToAddConstraintWithoutUpdatingConstraintsArray:roundingAdjustment:mutuallyExclusiveConstraints:] 7 UIKitCore 0x1ada682bc -[UIView(UIConstraintBasedLayout) nsli_addConstraint:] 8 UIKitCore 0x1ada6850c __50-[UIView(UIConstraintBasedLayout) addConstraints:]_block_invoke 9 Foundation 0x1a998030c -[NSISEngine withBehaviors:performModifications:] 10 UIKitCore 0x1ada683d8 -[UIView(UIConstraintBasedLayout) addConstraints:] 11 UIKitCore 0x1ad4ba138 -[UIInputWindowControllerHostingItem updateVisibilityConstraintsForPlacement:] 12 UIKitCore 0x1ad4b7a84 -[UIInputWindowControllerHostingItem updateViewConstraints] 13 UIKitCore 0x1ad4b268c -[UIInputWindowControllerHosting updateViewConstraints] 14 UIKitCore 0x1ad4a7824 -[UIInputWindowController updateViewConstraints] 15 UIKitCore 0x1ad4afa6c -[UIInputWindowController changeToInputViewSet:] 16 UIKitCore 0x1ad4b0350 __43-[UIInputWindowController setInputViewSet:]_block_invoke_3 17 UIKitCore 0x1ad4ac1f8 __77-[UIInputWindowController moveFromPlacement:toPlacement:starting:completion:]_block_invoke.926 18 Foundation 0x1a9a7d874 __NSFireDelayedPerform 19 CoreFoundation 0x1a9626e1c __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ 20 CoreFoundation 0x1a9626b58 __CFRunLoopDoTimer 21 CoreFoundation 0x1a9626228 __CFRunLoopDoTimers 22 CoreFoundation 0x1a9621364 __CFRunLoopRun 23 CoreFoundation 0x1a96208bc CFRunLoopRunSpecific 24 GraphicsServices 0x1b348c328 GSEventRunModal 25 UIKitCore 0x1ad6b66d4 UIApplicationMain 26 YemeksepetiProd 0x1023d7440 main + 28 (AppDelegate.swift:28) 27 libdyld.dylib 0x1a94ab460 start Crashed: com.twitter.crashlytics.ios.exception 0 YSMarket 0x105532a94 CLSProcessRecordAllThreads 1 YSMarket 0x105532e7c CLSProcessRecordAllThreads 2 YSMarket 0x105521e7c CLSHandler 3 YSMarket 0x105530e90 __CLSExceptionRecord_block_invoke 4 libdispatch.dylib 0x1a9376184 _dispatch_client_callout 5 libdispatch.dylib 0x1a9359dd8 _dispatch_lane_barrier_sync_invoke_and_complete 6 YSMarket 0x1055308fc CLSExceptionRecord 7 YSMarket 0x105530728 CLSExceptionRecordNSException 8 YSMarket 0x10553031c CLSTerminateHandler() 9 libc++abi.dylib 0x1a9476304 std::__terminate(void (*)()) 10 libc++abi.dylib 0x1a9475ed8 __cxa_rethrow 11 libobjc.A.dylib 0x1a93d1258 objc_exception_rethrow 12 CoreFoundation 0x1a962092c CFRunLoopRunSpecific 13 GraphicsServices 0x1b348c328 GSEventRunModal 14 UIKitCore 0x1ad6b66d4 UIApplicationMain 15 YemeksepetiProd 0x1023d7440 main + 28 (AppDelegate.swift:28) 16 libdyld.dylib 0x1a94ab460 start