这是我第一次在Xcode中使用Playgrounds 但是当我创建一个新的游乐场时，我没有编写任何代码行但是它仍然在运行然后向我显示此错误
> 2016-09-30 17:52:45.591 MyPlaygroundgggg[1946:22425] *** NSForwarding: warning: selector (0x11908fc82) for message
> 'processInfo' does not match selector known to Objective C runtime
> (0x10cd894d5)-- abort 2016-09-30 17:52:45.797
> MyPlaygroundgggg[1946:22425] +[NSProcessInfo processInfo]:
> unrecognized selector sent to class 0x10a1c26f8 2016-09-30
> 17:52:46.606 MyPlaygroundgggg[1946:22425] *** Terminating app due to
> uncaught exception 'NSInvalidArgumentException', reason:
> '+[NSProcessInfo processInfo]: unrecognized selector sent to class
> 0x10a1c26f8'
> *** First throw call stack: ( 0 CoreFoundation 0x000000010a8ff34b __exceptionPreprocess + 171 1 libobjc.A.dylib
> 0x000000010a36021e objc_exception_throw + 48 2 CoreFoundation
> 0x000000010a96ee74 +[NSObject(NSObject) doesNotRecognizeSelector:] +
> 132 3 CoreFoundation 0x000000010a884c15
> ___forwarding___ + 1013 4 CoreFoundation 0x000000010a884798 _CF_forwarding_prep_0 + 120 5 PlaygroundLogger
> 0x000000011908a5c7
> _TTSf4gs_g_d___TZFC16PlaygroundLogger11Environment3getfT8variableSS12defaultValueGSqSS__GSqSS_
> + 103 6 PlaygroundLogger 0x000000011907929b _TTSf4d___TFCO16PlaygroundLogger9Woodchuck12InstanceDataCfT_S1_ + 107 7 PlaygroundLogger 0x0000000119071629
> globalinit_33_9A595A25FCBAC90B0D0056FBEBBB0699_func5 + 9 8
> libdispatch.dylib 0x000000010dd9712e
> _dispatch_client_callout + 8 9 libdispatch.dylib 0x000000010dd81e12 dispatch_once_f + 68 10 PlaygroundLogger
> 0x000000011908c331 playground_logger_initialize + 113 11 ???
> 0x0000000119364069 0x0 + 4717953129 12 MyPlaygroundgggg
> 0x0000000109d89620 main + 0 13 CoreFoundation
> 0x000000010a8a425c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12 14
> CoreFoundation 0x000000010a889304
> __CFRunLoopDoBlocks + 356 15 CoreFoundation 0x000000010a888a75 __CFRunLoopRun + 901 16 CoreFoundation
> 0x000000010a888494 CFRunLoopRunSpecific + 420 17 GraphicsServices
> 0x000000010fc93a6f GSEventRunModal + 161 18 UIKit
> 0x000000010b432f34 UIApplicationMain + 159 19 MyPlaygroundgggg
> 0x0000000109d896e9 main + 201 20 libdyld.dylib
> 0x000000010dde068d start + 1 ) libc++abi.dylib: terminating with
> uncaught exception of type NSException
以下是playground文件的快照：
Snapshot of the Playground file
我试图重新启动Xcode和我的电脑，但同样的错误 我正在使用macOS Sierra 10.12 MacBook pro 15英寸，2011年初 Ram 4 GB
