I encountered the same problem.This crash only apears above iOS14,including iOS15.There is no such case in versions below iOS 14 too
And there is not frame about the function of my app on the top of the crashed stack trace.So I can hardly find why this crash happends.
Crashed: com.apple.main-thread
0 libdispatch.dylib 0x19b7b87b8
dispatch_group_leave.cold.1 + 36
1 libdispatch.dylib 0x19b784638 _dispatch_group_wake + 138
2 libdispatch.dylib 0x19b781a54 _dispatch_call_block_and_release + 32
3 libdispatch.dylib 0x19b7837ec _dispatch_client_callout + 20
4 libdispatch.dylib 0x19b791c40 _dispatch_main_queue_callback_4CF + 884
5 CoreFoundation 0x19bb101f8 CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 16
6 CoreFoundation 0x19bb0a0d0 __CFRunLoopRun + 2524
7 CoreFoundation 0x19bb091c0 CFRunLoopRunSpecific + 600
8 GraphicsServices 0x1b30f1734 GSEventRunModal + 164
9 UIKitCore 0x19e5777e4 -[UIApplication _run] + 1072
10 UIKitCore 0x19e57d054 UIApplicationMain + 168
11 MyApp 0x1022eae98 main + 22 (main.m:22)
12 libdyld.dylib 0x19b7c5cf8 start + 4
JeremyXiaoo
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution