我在Crashlytics中收到以下崩溃报告：
Crashed: com.apple.NSURLConnectionLoader
SIGSEGV
SEGV_ACCERR
0 CoreFoundation CFDictionaryGetValue + 27
1 CFNetwork XTubeManager::withTubeManager(CoreSchedulingSet const*, void (GlueTubeManager*) block_pointer) + 57
2 CFNetwork XTubeManager::withTubeManager(CoreSchedulingSet const*, void (GlueTubeManager*) block_pointer) + 57
3 CFNetwork -[__NSURLSessionLocal _withConnectionCache_enqueueRequest:forProtocol:scheduling:options:] + 125
4 CFNetwork HTTPProtocol::asynchronouslyCreateAndOpenStream_WithMessage_AfterCookiesAndAuthenticatorHeaders(__CFHTTPMessage*) + 1545
5 CFNetwork HTTPProtocol::asynchronouslyAddAuthenticatorHeadersAndContinue(__CFHTTPMessage*) + 101
6 CFNetwork invocation function for block in HTTPProtocol::asynchronouslyAddCookiesAndContinue(__CFHTTPMessage*) + 23
7 libdispatch.dylib __dispatch_client_callout + 23
8 libdispatch.dylib __dispatch_block_invoke$VARIANT$mp + 447
9 CFNetwork RunloopBlockContext::_invoke_block(void const*, void*) + 19
10 CoreFoundation CFArrayApplyFunction + 36
11 CFNetwork RunloopBlockContext::perform() + 183
12 CFNetwork MultiplexerSource::perform() + 217
13 CFNetwork MultiplexerSource::_perform(void*) + 49
14 CoreFoundation ___CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
15 CoreFoundation ___CFRunLoopDoSources0 + 453
16 CoreFoundation ___CFRunLoopRun + 795
17 CoreFoundation CFRunLoopRunSpecific + 520
18 CoreFoundation CFRunLoopRunInMode + 108
19 CFNetwork +[NSURLConnection(Loader) _resourceLoadLoop:] + 487
20 Foundation ___NSThread__start__ + 1149
21 libsystem_pthread.dylib __pthread_body + 139
22 libsystem_pthread.dylib _pthread_start + 110