Using Xcode 14.0.1 (and likely with earlier versions), if you assign the 'Launch Screen File' via the target General tab, then the storyboard selected is assigned to parameter 'Launch screen interface file base name' in the Info.plist file with extension '.storyboard'. If you remove the extension from the plist file, then this error goes away, and the launch screen still works. This method also allows iPad multitasking which is prevented when the 'Requires full screen' option is selected, as suggested above.