Xcode12.5
These crashes mostly happened after app launch for several seconds on iOS14
Thread 0 Crashed:
0 libobjc.A.dylib 0x00000001a2ab7978 objc_msgSend + 24
1 UIKitCore 0x000000019113bea4 -[UIKeyboardImpl unmarkText:] + 200
2 UIKitCore 0x0000000191141eec __59-[UIKeyboardImpl handleAcceptedCandidate:executionContext:]_block_invoke_2 + 432
3 UIKitCore 0x0000000191174478 -[UIKeyboardTaskEntry execute:] + 184
4 UIKitCore 0x0000000191172f6c -[UIKeyboardTaskQueue continueExecutionOnMainThread] + 320
5 UIKitCore 0x00000001911738d0 -[UIKeyboardTaskQueue waitUntilTaskIsFinished:] + 168
6 UIKitCore 0x00000001911739e4 -[UIKeyboardTaskQueue performSingleTask:] + 152
7 UIKitCore 0x000000019114e9c8 -[UIKeyboardImpl acceptCurrentCandidateForInput:] + 296
8 UIKitCore 0x0000000190fa3a44 -[UIKeyboardCandidateController candidateView:didAcceptCandidate:atIndexPath:inGridType:generateFeedback:] + 176
9 UIKitCore 0x0000000190fa396c -[UIKeyboardCandidateController candidateView:didAcceptCandidate:atIndexPath:inGridType:] + 96
10 TextInputUI 0x0000000196979c2c -[TUICandidateView candidateGrid:didAcceptCandidate:atIndexPath:] + 204
11 TextInputUI 0x0000000196992a58 -[TUICandidateGrid collectionView:didSelectItemAtIndexPath:] + 180
12 UIKitCore 0x0000000190a96104 -[UICollectionView _selectItemAtIndexPath:animated:scrollPosition:notifyDelegate:deselectPrevious:performCustomSelectionAction:] + 896
13 UIKitCore 0x0000000190abfe7c -[UICollectionView touchesEnded:withEvent:] + 572
14 UIKitCore 0x0000000191392200 forwardTouchMethod + 340
15 UIKitCore 0x00000001913922fc -[UIResponder touchesEnded:withEvent:] + 60
16 UIKitCore 0x0000000191392200 forwardTouchMethod + 340
17 UIKitCore 0x00000001913922fc -[UIResponder touchesEnded:withEvent:] + 60
18 UIKitCore 0x0000000191392200 forwardTouchMethod + 340
19 UIKitCore 0x00000001913922fc -[UIResponder touchesEnded:withEvent:] + 60
20 UIKitCore 0x00000001913a0c04 -[UIWindow _sendTouchesForEvent:] + 984
21 UIKitCore 0x00000001913a256c -[UIWindow sendEvent:] + 3972
22 UIKitCore 0x000000019137c190 -[UIApplication sendEvent:] + 708
23 UIKitCore 0x0000000191403560 __dispatchPreprocessedEventFromEventQueue + 7356
24 UIKitCore 0x00000001914064b8 __processEventQueue + 6456
25 UIKitCore 0x00000001913fda3c __eventFetcherSourceCallback + 156
26 CoreFoundation 0x000000018e9bf81c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
27 CoreFoundation 0x000000018e9bf718 __CFRunLoopDoSource0 + 204
28 CoreFoundation 0x000000018e9bea28 __CFRunLoopDoSources0 + 264
29 CoreFoundation 0x000000018e9b8d20 __CFRunLoopRun + 820
30 CoreFoundation 0x000000018e9b84bc CFRunLoopRunSpecific + 596
31 GraphicsServices 0x00000001a543d820 GSEventRunModal + 160
32 UIKitCore 0x000000019135c734 -[UIApplication _run] + 1068
33 UIKitCore 0x0000000191361e10 UIApplicationMain + 164
34 sohuhy 0x0000000103892b88 main (main.m:14)
35 libdyld.dylib 0x000000018e67fe60 start + 0
My question is How to location this crash call stack in App Source Code？