Ch. 16, P284: NSCoding error

When declaring NSCoding protocol, I get the error Type ‘Item’ does not conform to ‘NSCoding’

Help!

Below is a picture

as per NSCoding protocol, in order to conform to it, you must implement mandatory methods:

func encode(with aCoder: NSCoder)

init?(coder aDecoder: NSCoder)

:slight_smile: