Hello. We have this crash reported by Crashlytics. The number of these crashes is not very big, but I would like to know if our app is responsible for that issue or if it is a CFNetwork problem. I can't reproduce this crash on my side, I see it only in reports. The latest crash information is next: iOS 13, all versions iPhone 7, 7 Plus, 6S, 6S Plus, SE (I don't know if it is related, but there is no iPhone 8, X, or higher models) All crashes happen in Foreground Key value crash_info_entry_0 - Detected over-release of a CFTypeRef Crashed thread: Crashed: com.apple.NSURLSession-work EXC_BREAKPOINT 0x0000000184214904 0	CoreFoundation								 0x184214904 _CFRelease.cold.3 + 16 1	CoreFoundation								 0x18413d594 _CFRelease + 1316 2	CFNetwork											0x1874c003c cfnTranslateCFError + 12508 3	CFNetwork											0x18740b158 (Отсутствует) 4	CFNetwork											0x187404240 (Отсутствует) 5	CFNetwork											0x1874a0030 CFURLDownloadCancel + 39680 6	CFNetwork											0x1874a00dc CFURLDownloadCancel + 39852 7	CFNetwork											0x1875753d0 _CFNetworkSetATSContext + 88700 8	CFNetwork											0x1874a0868 CFURLDownloadCancel + 41784 9	libdispatch.dylib							0x183e35c8c _dispatch_block_async_invoke2 + 104 10 libdispatch.dylib							0x183e83524 _dispatch_client_callout + 16 11 libdispatch.dylib							0x183e2f8a4 _dispatch_lane_serial_drain$VARIANT$mp + 608 12 libdispatch.dylib							0x183e302c4 _dispatch_lane_invoke$VARIANT$mp + 464 13 libdispatch.dylib							0x183e3978c _dispatch_workloop_worker_thread + 588 14 libsystem_pthread.dylib				0x183ed4b74 _pthread_wqthread + 272 There is also present this thread: com.apple.CFNetwork.Connection - https://developer.apple.com/forums/content/attachment/f9751305-d37b-4e79-a5e8-8e1d45d5346e Or this one: com.apple.network.connections - https://developer.apple.com/forums/content/attachment/da508992-5eff-4118-b041-3fa866ae890e Other threads in crash reports are different from report to report.