我最近经常遇到这种情况，设备iPhone 5s，SDk：9.1
Crashed Thread: 6
0 ??? 0x0000000000000000 0x0 + 0
1 libdispatch.dylib 0x19af02578 dispatch_source_cancel (in libdispatch.dylib) + 84
2 CFNetwork 0x18533ca80 SHTTP2ConnectionCache::_onqueue_removeAllConnections() (in CFNetwork) + 60
3 CFNetwork 0x18533ca1c ___ZN21SHTTP2ConnectionCache24invalidateAllConnectionsEv_block_invoke (in CFNetwork) + 24
4 libdispatch.dylib 0x19aefd6a8 _dispatch_client_callout (in libdispatch.dylib) + 16
5 libdispatch.dylib 0x19af069e4 _dispatch_block_invoke (in libdispatch.dylib) + 540
6 CFNetwork 0x185307ce4 RunloopBlockContext::_invoke_block(void const*, void*) (in CFNetwork) + 36
7 CoreFoundation 0x185b006cc CFArrayApplyFunction (in CoreFoundation) + 68
8 CFNetwork 0x185307bc8 RunloopBlockContext::perform() (in CFNetwork) + 136
9 CFNetwork 0x185307a88 MultiplexerSource::perform() (in CFNetwork) + 312
10 CFNetwork 0x1853078b4 MultiplexerSource::_perform(void*) (in CFNetwork) + 68
11 CoreFoundation 0x185bd4544 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ (in CoreFoundation) + 24
12 CoreFoundation 0x185bd3fd8 __CFRunLoopDoSources0 (in CoreFoundation) + 540
13 CoreFoundation 0x185bd1cd8 __CFRunLoopRun (in CoreFoundation) + 724
14 CoreFoundation 0x185b00ca0 CFRunLoopRunSpecific (in CoreFoundation) + 384
15 CFNetwork 0x185399b84 +[NSURLConnection(Loader) _resourceLoadLoop:] (in CFNetwork) + 412
16 Foundation 0x186b5fc80 __NSThread__start__ (in Foundation) + 1000
17 libsystem_pthread.dylib 0x19b113b28 _pthread_body (in libsystem_pthread.dylib) + 156
18 libsystem_pthread.dylib 0x19b113a8c _pthread_body (in libsystem_pthread.dylib) + 0
19 libsystem_pthread.dylib 0x19b111028 thread_start (in libsystem_pthread.dylib) + 4
您对导致此次崩溃的原因有什么想法吗？