Compatibility Error of Widget Application on IOS 16.x and 15.x

I've created a custom Widgets app utilizing the WidgetKit extension, with the primary app built in UIKit and the widget extension in SwiftUI. Though the app functions seamlessly on iOS 17.x, when lowering the minimum deployment target to iOS 16.x or 15.x, results in the widgets failing to display on devices with these earlier versions.

How can I ensure compatibility across these different iOS versions so that all features function correctly? Kindly let me know if you need further details of this issue.