We have an app that is working just fine in iOS 10 and previous version, but crashes in iOS 11.
It happens pretty frequently.
I found crash log in Fabric Crashlytisc.
Here it is.
#1. Crashed: com.apple.NSURLSession-work
0 CFNetwork 0x1840bd954 HTTPParser::HTTPParser(__CFAllocator const*, HTTPParserClient*, HTTPParser*) + 44
1 CFNetwork 0x183fa0a70 HTTPMessage::commonInitialization(unsigned char, HTTPMessage const*) + 212
2 CFNetwork 0x183fa0a70 HTTPMessage::commonInitialization(unsigned char, HTTPMessage const*) + 212
3 CFNetwork 0x183fa0c10 HTTPMessage::HTTPMessage(HTTPMessage const*) + 112
4 CFNetwork 0x1840bead8 HTTPRequestMessage::HTTPRequestMessage(HTTPRequestMessage const*) + 36
5 CFNetwork 0x183f7fe00 HTTPRequest::HTTPRequest(HTTPRequest const*) + 24
6 CFNetwork 0x183f82540 URLRequest::initialize(URLRequest const*, unsigned char) + 656
7 CFNetwork 0x183f382f8 _createRequestCopy(__CFAllocator const*, _CFURLRequest const*, unsigned char) + 144
8 CFNetwork 0x1840a8b20 -[NSURLRequest mutableCopyWithZone:] + 44
9 CFNetwork 0x183efacfc -[__NSCFLocalSessionTask _onqueue_strippedMutableRequest] + 40
10 CFNetwork 0x183ee50b4 __75-[__NSURLSessionLocal taskForClass:request:uploadFile:bodyData:completion:]_block_invoke.258 + 40
11 CFNetwork 0x183efd87c -[__NSCFLocalSessionTask _onqueue_completeInitialization] + 72
12 CFNetwork 0x184121db0 __30-[__NSCFURLSessionTask resume]_block_invoke + 40
13 libdispatch.dylib 0x1832dd088 _dispatch_call_block_and_release + 24
14 libdispatch.dylib 0x1832dd048 _dispatch_client_callout + 16
15 libdispatch.dylib 0x1832e6e48 _dispatch_queue_serial_drain$VARIANT$mp + 528
16 libdispatch.dylib 0x1832e77d8 _dispatch_queue_invoke$VARIANT$mp + 340
17 libdispatch.dylib 0x1832e8200 _dispatch_root_queue_drain_deferred_wlh$VARIANT$mp + 400
18 libdispatch.dylib 0x1832f04a0 _dispatch_workloop_worker_thread$VARIANT$mp + 644
19 libsystem_pthread.dylib 0x183582fd0 _pthread_wqthread + 932
20 libsystem_pthread.dylib 0x183582c20 start_wqthread + 4
Plz, could you give some advice?
