'NSKeyedUnarchiveFromData' should not be used to for un-archiving and will be removed in a future release

apple is removing NSKeyedUnarchiveFromData at some point because it's not secure by default. if you're storing a transformable value using NSKeyedUnarchiveFromData in coredata, it will then become unreadable.

https://www.kairadiagne.com/2020/01/13/nssecurecoding-and-transformable-properties-in-core-data.html

and https://developer.apple.com/forums/thread/107533