Javascript – Error Running React Native App From Terminal (iOS)

iosios-simulatorjavascriptreact-nativereactjs

I am following the tutorial on the official React Native website.

Using the following to build my project:

react-native run-ios

I get the error:

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

Although, when I run the app from the .xcodeproj, everything works fine.

Any suggestions?

Best Answer

Check out this link (Running react-native run-ios occurs an error?). It appears to be a problem with the location of Command line tools.

In Xcode, select Xcode menu, then Preferences, then Locations tab. Select your Xcode version from the dropdown and exit Xcode.

XCode location tab

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