IOS simulator testing: not able to change default version from 8.4 to required version(11.1)

Error:

Test Cases/Test1 FAILED because (of) (Stack trace: com.kms.katalon.core.exception.StepFailedException: Unable to start app at: '/Users/touch_priyank/Documents/SwatiV/Katalon - Appium/BizReview.app' (Root cause: org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. Original error: Platform version must be 9.3 or above. '8.4' is not supported. (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 475 milliseconds
Build info: version: '3.7.1', revision: '8a0099a', time: '2017-11-06T21:07:36.161Z'
System info: host: '01HW962820.local', ip: '172.17.30.163', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.13.2', java.version: '1.8.0_181'
Driver info: driver.version: IOSDriver)

The version in our system is 11.1 but in error logs its showing platformVersion=8.4, and suggesting us to use 9.1 and above.

Kindly help in setting the required version in simulator.
Thanks in advance.

Hi Kumar,

Do you have multiple versions of Xcode installed on your machine? Can you try running this command from your Terminal:

xcode-select -p

This will print out the location of the default version of Xcode on your machine. Does the path it indicates point to a version of Xcode 9.3 or greater?

- Chris