Crashed: com.apple.NSURLSession-work
0  libobjc.A.dylib                0x1b426d1a0 objc_msgSend + 32
1  libobjc.A.dylib                0x1b428a644 objc_object::sidetable_release(bool) + 248
2  Foundation                     0x1b48f5b80 NSKeyValuePopPendingNotificationLocal + 148
3  Foundation                     0x1b48f5aa4 NSKeyValueDidChange.llvm.6079828102272951676 + 364
4  Foundation                     0x1b48f54d8 -[NSObject(NSKeyValueObservingPrivate) _changeValueForKeys:count:maybeOldValuesDict:maybeNewValuesDict:usingBlock:] + 624
5  Foundation                     0x1b4844dbc -[NSObject(NSKeyValueObservingPrivate) _changeValueForKey:key:key:usingBlock:] + 68
6  Foundation                     0x1b48f1078 _NSSetLongLongValueAndNotify + 284
7  CFNetwork                      0x1b7748e1c CFNetServiceBrowserSearchForServices + 1704
8  CFNetwork                      0x1b7965a34 __CFTubeSetTubeTypeNotifier + 45832
9  libdispatch.dylib              0x1b4215610 _dispatch_call_block_and_release + 24
10 libdispatch.dylib              0x1b4216184 _dispatch_client_callout + 16
11 libdispatch.dylib              0x1b41c2464 _dispatch_lane_serial_drain$VARIANT$mp + 608
12 libdispatch.dylib              0x1b41c2e58 _dispatch_lane_invoke$VARIANT$mp + 420
13 libdispatch.dylib              0x1b41cc340 _dispatch_workloop_worker_thread + 588
14 libsystem_pthread.dylib        0x1b4265fa4 _pthread_wqthread + 276
15 libsystem_pthread.dylib        0x1b4268ae0 start_wqthread + 8