你好，我们iOS版本用到了VOD视频上传收到了一个线上Bug，报错的堆栈信息如下，请问如何处理呢。

在 [VODUploadClient resumableUpload] 方法中 Crashed: NSOperationQueue 0x149d95910 (QOS: UNSPECIFIED) 0 ZYFilmic 0x1043baf78 __34-[VODUploadClient resumableUpload]_block_invoke + 852 (VODUploadClient.m:852) 1 ZYFilmic 0x103224e58 -[OSSClient(MultipartUpload) executePartUpload:totalBytesExpectedToSend:totalBytesSent:index:partData:alreadyUploadPart:localParts:errorTask:] + 1445 (OSSClient.m:1445) 2 ZYFilmic 0x10322484c __90-[OSSClient(MultipartUpload) upload:uploadIndex:uploadPart:count:uploadedLength:fileSize:]_block_invoke + 1356 (OSSClient.m:1356) 3 Foundation 0x18d322004 NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK + 24 4 Foundation 0x18d2245a4 -[NSBlockOperation main] + 104 5 Foundation 0x18d324344 NSOPERATION_IS_INVOKING_MAIN + 24 6 Foundation 0x18d22427c -[NSOperation start] + 752 7 Foundation 0x18d324d70 NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION + 24 8 Foundation 0x18d324830 __NSOQSchedule_f + 184 9 libdispatch.dylib 0x18cbeff24 _dispatch_block_async_invoke2 + 144 10 libdispatch.dylib 0x18cbe35ac _dispatch_client_callout + 20 11 libdispatch.dylib 0x18cbe5d60 _dispatch_continuation_pop + 408 12 libdispatch.dylib 0x18cbe54c0 _dispatch_async_redirect_invoke + 588 13 libdispatch.dylib 0x18cbf2724 _dispatch_root_queue_drain + 348 14 libdispatch.dylib 0x18cbf2ed0 _dispatch_worker_thread2 + 116 15 libsystem_pthread.dylib 0x18cc496dc _pthread_wqthread + 216 16 libsystem_pthread.dylib 0x18cc4f9c8 start_wqthread + 8