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I just got a new machine and downloaded XCode. I used git to clone my ReactNative project from Github. I have everything ready to go. But when I run
react-native run-ios I see
xcrun: error: unable to find utility "instruments", not a developer tool or in PATH
The fix for this is pretty simple but of course not intuitive.
You need to launch XCode and agree to the terms first. Then go to
Preferences > Locations and you'll see a select tag for Command Line Tools. Click this select box and choose the version of XCode you'll be using.
After this you can go back to the command line and run
Here is a screen shot