UIKit exception on iPad with an app only for iPhone

Hello

In xCode crash reports, I notice an increase in crashes for an "iPhone only >=iOS12" app running on iPad (from iOS 15.4 and more). No issue on iPhone.

2   CoreFoundation                	0x18086d390 +[NSException raise:format:] + 112 (NSException.m:156)
3   UIKitCore                     	0x18312f648 -[UINib instantiateWithOwner:options:] + 456 (UINib.m:403)
4   UIKitCore                     	0x182dc4ca0 -[UIViewController loadView] + 576 (UIViewController.m:3736)

Do you have any information ? Thank you