You are not alone. I moved my project from an iMac (2017-MacOS 13.6.6) platform, where everything worked as expected, because Apple will no longer update the OS. I moved to my laptop (M1 2020) with MacOS 14.4.1 running Xcode Version 15.3 (15E204a). My project is directed to MacOS minimum 12.4 using Xcode Project Format 13.0. With no changes (except the usual file errors that need correcting after moving a project to a different machine) I get your above mentioned message in my console output window in the editor.
With one additional snafu, I am having issues with the Store. SKPaymentQueue.default().restoreCompletedTransactions() is no longer directed into the Observer
( class StoreObserver : NSObject, SKPaymentTransactionObserver ).
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
print("HELLO I AM READY TO PROCESS YOUR REQUEST FOR RESTORE!")
.. more code ..
Oddly, this executes when the App loads and the Observer is created BUT, refuses to execute upon command instruction by the .restoreCompletedTransactions.
Now, I know this little extra I added wasn't part of the original post but, I thought I'd share.
Best of luck.