iOS app crashes "tcpConnWorkQueue" <p>Is anyone else facing this issue?</p> <pre><code>Thread : Crashed: tcpConnWorkQueue 0 libsystem_kernel.dylib 0x000000019344f270 __pthread_kill + 8 1 libsystem_pthread.dylib 0x00000001934ed228 pthread_kill + 112 2 libsystem_c.dylib 0x00000001933c6b18 abort + 112 3 libsystem_malloc.dylib 0x000000019348a3e4 _nano_malloc_check_clear 4 libsystem_malloc.dylib 0x00000001934892f8 nano_free + 192 5 CoreFoundation 0x00000001825c9a04 CFRelease + 1064 6 CFNetwork 0x000000018203f5dc SocketStream::~SocketStream() + 472 7 CFNetwork 0x000000018203f3ec SocketStream::~SocketStream() + 28 8 CoreFoundation 0x00000001825c9724 CFRelease + 328 9 libdispatch.dylib 0x000000019330d49c _dispatch_call_block_and_release + 24 10 libdispatch.dylib 0x000000019330d45c _dispatch_client_callout + 16 11 libdispatch.dylib 0x0000000193317554 _dispatch_queue_drain + 1216 12 libdispatch.dylib 0x0000000193310564 _dispatch_queue_invoke + 132 13 libdispatch.dylib 0x0000000193319224 _dispatch_root_queue_drain + 656 14 libdispatch.dylib 0x000000019331a75c _dispatch_worker_thread3 + 108 15 libsystem_pthread.dylib 0x00000001934e92e4 _pthread_wqthread + 816 </code></pre> <p>//Main thread</p> <pre><code>Thread : com.apple.main-thread 0 libsystem_kernel.dylib 0x000000019872ce7c mach_msg_trap + 8 1 libsystem_kernel.dylib 0x000000019872ccf8 mach_msg + 72 2 CoreFoundation 0x0000000187941808 __CFRunLoopServiceMachPort + 200 3 CoreFoundation 0x000000018793f75c __CFRunLoopRun + 940 4 CoreFoundation 0x000000018786d664 CFRunLoopRunSpecific + 396 5 UIFoundation 0x0000000194817500 -[NSHTMLReader _loadUsingWebKit] + 1988 6 UIFoundation 0x00000001948188c0 -[NSHTMLReader attributedString] + 32 7 UIFoundation 0x00000001947b65e4 _NSReadAttributedStringFromURLOrData + 5804 8 UIFoundation 0x00000001947b4e80 -[NSAttributedString(NSAttributedStringUIFoundationAdditions) initWithData:options:documentAttributes:error:] + 148 9 The App 0x00000001000b27b0 -[LAItem setItemDescriptionHtml:] (LAItem.m:108) 10 The Test App 0x00000001000b1e80 -[LAItem initWithDataDictionary:] (LAItem.m:46) 11 The Test App 0x00000001000b25dc +[LAItem itemsWithDataArray:] (LAItem.m:93) 12 The Test App 0x00000001001394f4 -[LATest updateWithDataDictionary:] (LATest.m:234) 13 The Test App 0x000000010015fab8 __47-[DetailViewController getTestDetailFeed]_block_invoke (TestDetailViewController.m:165) 14 The Test App 0x00000001001843dc __86-[DataCenter sendGetRequestWithUrlEndPoint:urlParameters:successBlock:failureBlock:]_block_invoke (LADataCenter.m:163) 15 libdispatch.dylib 0x000000019860549c _dispatch_call_block_and_release + 24 16 libdispatch.dylib 0x000000019860545c _dispatch_client_callout + 16 17 libdispatch.dylib 0x0000000198609a70 _dispatch_main_queue_callback_4CF + 932 18 CoreFoundation 0x00000001879418dc __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12 19 CoreFoundation 0x000000018793f984 __CFRunLoopRun + 1492 20 CoreFoundation 0x000000018786d664 CFRunLoopRunSpecific + 396 21 GraphicsServices 0x00000001909a75a4 GSEventRunModal + 168 22 UIKit 0x000000018c172984 UIApplicationMain + 1488 23 The Test App 0x00000001001375d0 main (main.m:16) 24 libdyld.dylib 0x000000019862ea08 start + 4 </code></pre> <p>I am using <code>AFNetworking</code> kit for API hit.I can't find the exact scenario. it crashes very often. I got the trace from Crashlytics framework.</p> <p>Thanks in advance.</p>