相关疑难解决方法(0)

我正在关注官方React Native网站上的教程.

使用以下代码构建我的项目:

react-native run-ios

我收到错误:

Found Xcode project TestProject.xcodeproj
xcrun: error: unable to find utility "instruments", not a developer   
tool or in PATH

Command failed: xcrun instruments -s
xcrun: error: unable to find utility "instruments", not a developer 
tool or in PATH

虽然,当我从.xcodeproj运行应用程序时,一切正常.

有什么建议？

今天,我已经从macOS High Sierra更新了我的iMac到macOS Mojave.从那时起,我无法打开模拟器.每次我试图打开立即崩溃的模拟器.每当我尝试通过Xcode运行模拟器时,Xcode就会显示此错误

超时等待iphonesimulator的模拟器应用程序准备就绪

此外,我试图直接打开模拟器,它立即崩溃.这里的gif(gif有点慢) -

系统CPU和内存状态 -

这里有一些解决方案,我试过但没有运气 -

1. 清除iPhone模拟器缓存

   xcrun simctl erase all
   

   Run Code Online (Sandbox Code Playgroud)

2. 清除DerivedData

   ~/Library/Developer/Xcode/DerivedData/
   

   Run Code Online (Sandbox Code Playgroud)

3. 清除iOS DeviceSupport

   ~/Library/Developer/Xcode/iOS DeviceSupport/
   

   Run Code Online (Sandbox Code Playgroud)

4. 删除Xcode首选项

   defaults delete com.apple.dt.Xcode
   

   Run Code Online (Sandbox Code Playgroud)

5. 重启Xcode和系统

更新1

macOS日志 -

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Device iPhone XS (978302BA-5255-44CB-A77C-188071B99A7C, iOS 12.0, Booted) is available but has no defaultDisplay'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fff33a9543d __exceptionPreprocess + 256
    1   libobjc.A.dylib                     0x00007fff5f9a6720 objc_exception_throw + 48
    2   CoreFoundation                      0x00007fff33ab008e +[NSException raise:format:arguments:] + 98
    3   Foundation                          0x00007fff35e4c55d …

xcode 9模拟器错误无法启动模拟器launchd无法响应mac os sierra

我试过从派生数据中删除内容,重新启动Xcode,卸载和安装xcode等.