I am getting a crash on the live app I am working on and I can't seem to recreate or find the issue. This is the crash output:
`Crashed: NSOperationQueue 0x123e7d5c0 (QOS: UNSPECIFIED)
0 libobjc.A.dylib 0x184a52198 objc_release + 104
1 Foundation 0x1850bd930 NSKeyValuePopPendingNotificationLocal + 60
2 Foundation 0x1850bd8ac NSKeyValueDidChange.llvm.947807775919258276 + 364
3 Foundation 0x1850bd2e0 -[NSObject(NSKeyValueObservingPrivate) _changeValueForKeys:count:maybeOldValuesDict:maybeNewValuesDict:usingBlock:] + 624
4 Foundation 0x18500cb1c -[NSObject(NSKeyValueObservingPrivate) _changeValueForKey:key:key:usingBlock:] + 68
5 Foundation 0x1850b8eb8 _NSSetLongLongValueAndNotify + 284
6 CFNetwork 0x1880f4470 _CFNetworkHTTPConnectionCacheSetLimit + 205660
7 Foundation 0x1850d5410 __NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK__ + 16
8 Foundation 0x184fdf138 -[NSBlockOperation main] + 100
9 Foundation 0x1850d7698 __NSOPERATION_IS_INVOKING_MAIN__ + 20
10 Foundation 0x184fdedd0 -[NSOperation start] + 732
11 Foundation 0x1850d8090 __NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION__ + 20
12 Foundation 0x1850d7b5c __NSOQSchedule_f + 180
13 libdispatch.dylib 0x18498f7dc _dispatch_block_async_invoke2 + 104
14 libdispatch.dylib 0x1849dd184 _dispatch_client_callout + 16
15 libdispatch.dylib 0x184985a3c _dispatch_continuation_pop$VARIANT$mp + 412
16 libdispatch.dylib 0x184985190 _dispatch_async_redirect_invoke + 600
17 libdispatch.dylib 0x184991fa4 _dispatch_root_queue_drain + 376
18 libdispatch.dylib 0x184992770 _dispatch_worker_thread2 + 128
19 libsystem_pthread.dylib 0x184a2cb48 _pthread_wqthread + 212
20 libsystem_pthread.dylib 0x184a2f760 start_wqthread + 8`
Please help me to figure out this thing. Thanks
It is caused by FirebasePerformance v3.3.1 and XCode 12. Use 'FirebasePerformance', '3.3.0' should solve the problem.
After setting FirebasePerformance to v3.3.0, we did not see any NSKeyValuePopPendingNotificationLocal, AFURLSessionManager, NSKVODeallocate, CFDictionaryGetValue, NSKeyValueWillChange, [NSObject(NSKeyValueObservingPrivate) _changeValueForKeys:count:maybeOldValuesDict:maybeNewValuesDict:usingBlock:]... crashes anymore.
The crash-free percentage is recovered from 95% to 99.9%.