I keep getting the warning:
This app was built with the iOS 11.4 SDK. Starting March 2019, all iOS apps submitted to the App Store must be built with the iOS 12.1 SDK or later, included in Xcode 10.1 or later.
...when I upload to the app store.
I run Xcode 10.1, and I also set the base SDK to 12.1 as in the screenshot, but I still get the warning after archiving and uploading. Is there anything else I need to do? Deployment target is 9.0.

