ios使用afnetworking上传文件经常上传超时，但是重新上传又可以，在线求大神

[xiaoshihuan312]

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UUID: 1F5FC911-C653-3425-BEC4-660189ED9B43
NAME: Xindongai
ARCH: arm64
ADDR: 0x0000000100020000

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFDictionary bytes]: unrecognized selector sent to instance 0x17546c0c0'

Last Exception Backtrace:
0 CoreFoundation 0x00000001843265b8 + 160
1 libobjc.A.dylib 0x0000000194a2c0e4 objc_exception_throw + 60
2 CoreFoundation 0x000000018432d664 + 0
3 CoreFoundation 0x000000018432a418 + 928
4 CoreFoundation 0x000000018422eb6c _CF_forwarding_prep_0 + 92
5 Foundation 0x0000000185185004 + 52
6 Foundation 0x0000000185184ec4 + 72
7 Foundation 0x0000000185184dd8 + 168
8 Xindongai 0x000000010077b5c4 +[_priv_NBSUIHookMatrix nbs_JSONObjectWithData:options:error:] + 896
9 Xindongai 0x00000001001ea950 __45-[ChangeImageController updateImageToServer:]_block_invoke + 96
10 Xindongai 0x000000010002bf3c __112-[CKHttpCommunicate createUnloginedRequest:WithParam:withExParam:withMethod:success:failure:uploadFileProgress:]_block_invoke_2 + 1344
11 Xindongai 0x0000000100130db8 __72-[AFURLSessionManagerTaskDelegate URLSession:task:didCompleteWithError:]_block_invoke_2.152 + 224
12 libdispatch.dylib 0x0000000101440e30 _dispatch_call_block_and_release + 24
13 libdispatch.dylib 0x0000000101440df0 _dispatch_client_callout + 16
14 libdispatch.dylib 0x000000010144575c _dispatch_main_queue_callback_4CF + 1056
15 CoreFoundation 0x00000001842ddfa4 + 12
16 CoreFoundation 0x00000001842dc04c + 1492
17 CoreFoundation 0x00000001842090a4 CFRunLoopRunSpecific + 396
18 GraphicsServices 0x000000018d3ab5a4 GSEventRunModal + 168
19 UIKit 0x0000000188b3aaa4 UIApplicationMain + 1488
20 Xindongai 0x00000001000abbf8 main + 176
21 libdyld.dylib 0x000000019509aa08 + 4