i am tray to upload my IPA app to ios app store but i get this error
ERROR ITMS-90725: Please update Xcode and rebuild your app ERROR ITMS-90725: "SDK Version Issue. This app was built with the iOS '10.3' SDK. All new iOS apps submitted to the App Store must be built with the iOS '11.0' SDK or later, included in Xcode [9.0] or later. Please update Xcode and rebuild your app."
how to solve this problem please