I started learning React-Native from last few days. While running my first app i stuck with following error on command line.

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

I am using latest version of xcode so that was not the problem. After searching on google. It appears to be a problem with the location of Command line tools. To solve this problem

Please run xcode then go to

Xcode > Preferences > Locations

There you will find Command Line Tools select your version of the xcode from the dropdown.

That’s it. Run your app again from terminal.