SwiftData CloudKit integration requires that all attributes be optional, or have a default value set

After install XCode 15 beta 6:

@Model
class WordResult {
    var text = ""
    var translation:[String] = []

      init(){

      }
}

got this error:

Variable 'self._$backingData' used before being initialized

so I changed to :

@Model
class WordResult {
    var text:String
    var translation:[String]

    
    init(){
        self.text = ""
        self.translation = []
    }
}

Then got this:

CloudKit integration requires that all attributes be optional, or have a default value set

It seems it can not work with cloudkit now.