我的Xcode存在问题，很多时候我构建或存档项目，我收到此错误：
处理：Xcode [2376]路径：
/Applications/Xcode.app/Contents/MacOS/Xcode标识符：
com.apple.dt.Xcode版本：9.2（13772）构建信息：
IDEFrameworks-13772000000000000~2应用商品ID：497799835 App 外部ID：825038102代码类型：X86-64（原生） 父进程：??? [1]负责人：Xcode [2376] 用户ID：501日期/时间：2018-02-19 13：01：31.507 +0100操作系统版本：
Mac OS X 10.13.2（17C88）报告版本：12匿名UUID：
86191C10-4328-FD41-CE74-B094E22BEFE9启动后的时间清醒：510秒
系统完整性保护：已启用
Crashed Thread：45 Dispatch queue：ConcurrentQueue： - [XCWorkQueueCommandBuiltinInvocation startRunning] _block_invoke
异常类型：EXC_CRASH（SIGABRT）异常代码：
0x0000000000000000,0x0000000000000000异常注意：
EXC_CORPSE_NOTIFY应用程序特定信息：ProductBuildVersion：9C40b断言 失败:( sizeBack == listSize），功能 _has_code_signature_extended_attribute，file /Library/Caches/com.apple.xbs/Sources/IDEXcode3ProjectSupport/IDEXcode3ProjectSupport-13756/Xcode3Core/LegacyProjects/Frameworks/DevToolsCore/BuildTaskPlugIns/CoreBuildTasks/Translators/PBXCp/PBXCp.mm, 第453行。
Thread 0 :: Dispatch queue：com.apple.main-thread 0
libsystem_kernel.dylib 0x00007fff57ec07c2 mach_msg_trap + 10 1 libsystem_kernel.dylib 0x00007fff57ebfcdc mach_msg + 60 2
com.apple.CoreFoundation 0x00007fff30488a15 __CFRunLoopServiceMachPort + 341 3 com.apple.CoreFoundation 0x00007fff30487d67 __CFRunLoopRun + 1783 4 com.apple.CoreFoundation 0x00007fff304873d7 CFRunLoopRunSpecific + 487 5 com.apple.HIToolbox 0x00007fff2f794e26 RunCurrentEventLoopInMode + 286 6
com.apple.HIToolbox 0x00007fff2f794b96 ReceiveNextEventCommon + 613 7 com.apple.HIToolbox
0x00007fff2f794914 _BlockUntilNextEventMatchingListInModeWithFilter + 64 8 com.apple.AppKit 0x00007fff2da5ff5f _DPSNextEvent + 2085 9 com.apple.AppKit 0x00007fff2e1f5b4c - [NSApplication（NSEvent）_nextEventMatchingEventMask：untilDate：inMode：dequeue：] + 3044 10 com.apple.dt.DVTKit 0x000000010f84ff9a - [DVTApplication nextEventMatchingMask：untilDate：inMode：dequeue：] + 390 11 com.apple.AppKit 0x00007fff2da54d6d - [NSApplication run] + 764 12 com.apple.AppKit 0x00007fff2da23f1a NSApplicationMain + 804 13 libdyld.dylib
0x00007fff57d7a115 start + 1线程1 ::调度队列：shared-compile-command-queue（QOS： 0）libsystem_kernel.dylib 0x00007fff57ecb41a 阅读+ 10 1 com.apple.Xcode.DevToolsCore 0x0000000122e9a7aa - [XCWorkQueueCommandLocalSubprocessInvocation handleOutputFileDescriptorActivity] + 86 2
com.apple.Xcode.DevToolsCore 0x0000000122f094f3 - [Xcode3BuildTask main] + 1042 3 com.apple.Foundation 0x00007fff3259b53e - [__ NSOperationInternal _start：] + 778 4 libdispatch.dylib 0x00007fff57d40d50 _dispatch_client_callout + 8 5 libdispatch.dylib 0x00007fff57d53333 _dispatch_block_invoke_direct + 317 6
libdispatch.dylib 0x00007fff57d40d50 _dispatch_client_callout + 8 7 libdispatch.dylib 0x00007fff57d53333 _dispatch_block_invoke_direct + 317 8
libdispatch.dylib 0x00007fff57d531d6 dispatch_block_perform + 109 9 com.apple.Foundation
0x00007fff3259754c __NSOQSchedule_f + 342 10 libdispatch.dylib
0x00007fff57d40d50 _dispatch_client_callout + 8 11 libdispatch.dylib 0x00007fff57d53e76 _dispatch_continuation_pop + 472 12 libdispatch.dylib 0x00007fff57d4b6cb _dispatch_async_redirect_invoke + 703 13 libdispatch.dylib 0x00007fff57d42941 _dispatch_root_queue_drain + 515 14 libdispatch.dylib 0x00007fff57d426ed _dispatch_worker_thread3 + 101 15 libsystem_pthread.dylib 0x00007fff580051ca _pthread_wqthread + 1387 16 libsystem_pthread.dylib 0x00007fff58004c4d start_wqthread + 13线程2 ::调度队列： - [IDEExecutionEnvironment initWithWorkspaceArena：]（QOS：UNSPECIFIED）0 libsystem_kernel.dylib 0x00007fff57ec9cee __psynch_cvwait + 10 1 libsystem_pthread.dylib
0x00007fff58006662 _pthread_cond_wait + 732 2 com.apple.Foundation 0x00007fff3264acf8 - [__ NSOperationInternal _waitUntilFinished：] + 896 3 com.apple.Foundation 0x00007fff3261b765 - [NSOperationQueue waitUntilAllOperationsAreFinished] + 296 4 com.apple.dt.DVTFoundation 0x000000010f12a9c4 - [DVTOperationGroup main] + 66 5 com.apple.Foundation 0x00007fff3259b53e - [__ NSOperationInternal _start：] + 778 6 com.apple.dt.DVTFoundation 0x000000010f12a977 - [DVTOperationGroup start] + 110 7
com.apple.Foundation 0x00007fff32597567 __NSOQSchedule_f + 369 8 libdispatch.dylib 0x00007fff57d40d50 _dispatch_client_callout + 8 9 libdispatch.dylib 0x00007fff57d53e76 _dispatch_continuation_pop + 472 10 libdispatch.dylib 0x00007fff57d4b6cb _dispatch_async_redirect_invoke + 703 11 libdispatch.dylib 0x00007fff57d42941 _dispatch_root_queue_drain + 515 12 libdispatch.dylib 0x00007fff57d426ed _dispatch_worker_thread3 + 101 13 libsystem_pthread.dylib 0x00007fff580051ca _pthread_wqthread + 1387 14 libsystem_pthread.dylib 0x00007fff58004c4d start_wqthread + 13 ...
还有好几次，内置成功......有人对这个问题进行了解释吗？