react-native log-ios无法使用xcode 9.1
我收到此错误：
Scanning folders for symlinks in /Users/Tom/App/node_modules (18ms) NOTE: Most system logs have moved to a new logging system. See log(1) for more information. Nov 8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.imfoundation.IMRemoteURLConnectionAgent) <Warning>: Unknown key for Boolean: EnableTransactions Nov 8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.imfoundation.IMRemoteURLConnectionAgent) <Warning>: Unknown key for integer: _DirtyJetsamMemoryLimit Nov 8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.imfoundation.IMRemoteURLConnectionAgent) <Warning>: Unknown key for Boolean: EnablePressuredExit Nov 8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.AssetCacheLocatorService) <Warning>: Unknown key for Boolean: EnableTransactions Nov 8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.AssetCacheLocatorService) <Warning>: Unknown key for Boolean: EnablePressuredExit Nov 8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.StreamingUnzipService) <Warning>: Unknown key for Boolean: EnableTransactions Nov 8 08:30:06 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.StreamingUnzipService) <Warning>: Unknown key for Boolean: EnablePressuredExit Nov 8 08:30:08 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.videosubscriptionsd[2968]) <Warning>: Service exited with abnormal code: 1 Nov 8 08:30:08 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.WebBookmarks.webbookmarksd[2936]) <Warning>: Could not find and/or execute program specified by service: 2: No such file or directory: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/libexec/webbookmarksd Nov 8 08:30:08 MacBook-Pro com.apple.CoreSimulator.SimDevice.CDC87161-72A2-478C-AC7A-328643D6B81C[2781] (com.apple.WebBookmarks.webbookmarksd[2936]) <Notice>: Service setup event to handle failure and will not launch until it fires. Nov 8 08:30:17 MacBook-Pro profiled[2920] <Error>: objc[2920]: Class SFUserNotification is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/Sharing.framework/Sharing (0x10d4f2700) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/SafariServices.framework/SafariServices (0x12854f358). One of the two will be used. Which one is undefined. Nov 8 08:30:22 MacBook-Pro budd[2809] <Error>: objc[2809]: Class BYBuddyDaemonCloudSyncClient is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/SetupAssistant.framework/SetupAssistant (0x109356930) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/SetupAssistant.framework/budd (0x108e1e1f8). One of the two will be used. Which one is undefined.
有没有人能够为此找到解决方法？
Environment:
OS: macOS High Sierra 10.13.1
Node: 7.9.0
Yarn: 0.27.5
npm: 4.2.0
Watchman: 4.7.0
Xcode: Xcode 9.1 Build version 9B55
Android Studio: Not Found
Packages: (wanted => installed)
react: ^16.0.0 => 16.0.0
react-native: ^0.50.0-rc.1 => 0.50.0-rc.1