Appium 1.9.1 - iOS 12: Unable to start WDA instance on Hybrid Application for iOS-12

Our application is build on React Native and when try to start the application on iOS-12 device we are getting below issue:

ERROR genralized_utillity.Log4j.Log - Found issue in iOS Desired Capability

org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. Original error: Unhandled endpoint: /wda/screen – with parameters {


Application is getting launched but after that no execution occurs.

Can you please suggest solution to it?