Load Core Data data (iOS and swiftUI) - swift

Question

I'm developing an app, and I need save data, so im using Core Data, and unfortunately in not a Core Data expert
When I run the app for the first time, it works and saves the data (I checked the *.sqlit file), but if re-run the app give me this erros
2020-09-12 02:52:02.539123+0100 photoUniq_ios_v3[6106:338281] -[photoUniq_ios_v3.PUWorkspace initWithCoder:]: unrecognized selector sent to instance 0x600000a562e0
2020-09-12 02:52:02.539730+0100 photoUniq_ios_v3[6106:338281] [error] fault: exception raised during multi-threaded fetch -[photoUniq_ios_v3.PUWorkspace initWithCoder:]: unrecognized selector sent to instance 0x600000a562e0 ((null))
CoreData: fault: exception raised during multi-threaded fetch -[photoUniq_ios_v3.PUWorkspace initWithCoder:]: unrecognized selector sent to instance 0x600000a562e0 ((null))
2020-09-12 02:52:02.539958+0100 photoUniq_ios_v3[6106:338281] [error] CoreData: exception raised during multi-threaded fetch -[photoUniq_ios_v3.PUWorkspace initWithCoder:]: unrecognized selector sent to instance 0x600000a562e0 ((null))
2020-09-12 02:52:02.540290+0100 photoUniq_ios_v3[6106:338281] [error] error: SQLCore dispatchRequest: exception handling request: <NSSQLFetchRequestContext: 0x60000174c2a0> , -[photoUniq_ios_v3.PUWorkspace initWithCoder:]: unrecognized selector sent to instance 0x600000a562e0 with userInfo of (null)
CoreData: error: SQLCore dispatchRequest: exception handling request: <NSSQLFetchRequestContext: 0x60000174c2a0> , -[photoUniq_ios_v3.PUWorkspace initWithCoder:]: unrecognized selector sent to instance 0x600000a562e0 with userInfo of (null)
2020-09-12 02:52:02.589331+0100 photoUniq_ios_v3[6106:338281] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[photoUniq_ios_v3.PUWorkspace initWithCoder:]: unrecognized selector sent to instance 0x600000a562e0'
...
libc++abi.dylib: terminating with uncaught exception of type NSException
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[photoUniq_ios_v3.PUWorkspace initWithCoder:]: unrecognized selector sent to instance 0x60000344d3e0'
terminating with uncaught exception of type NSException
I have an environment object
SceneDelegate.swift
if let windowScene = scene as? UIWindowScene {
let window = UIWindow(windowScene: windowScene)
window.rootViewController = UIHostingController(rootView: contentView
.environmentObject(PU(ctx: context))
.environmentObject(PartialSheetManager())
)
PU.swift
class PU: NSManagedObject{
let id = UUID()
var defaultWorkspace:PUWorkspace{
self.cd_xWorkspaces!.first!
}
init(ctx:NSManagedObjectContext?) {
super.init(entity: PUPhotouniq.entity(), insertInto: ctx)
self.cd_xGallary = PUGallary(ctx: self.managedObjectContext)
self.cd_xWorkspaces = Array()
self.cd_xWorkspaces!.add(PUWorkspace(ctx: self.managedObjectContext))
}
}
PUWorkpace.swift
import Foundation
import SwiftUI
import CoreData
class PUWorkspace:NSManagedObject {
let id = UUID()
#NSManaged var cd_nome:String?
#NSManaged var cd_porcessedxFoldres:[PUFolder]?
#NSManaged var cd_xFoldres:[PUFolder]?
#NSManaged var cd_originalxFoldres:[PUFolder]?
#Published var cd_cover:UIImage = UIImage() //Init
var defaultFolder:PUFolder{
cd_xFoldres!.first ?? PUFolder(ctx: self.managedObjectContext)
}
init(ctx:NSManagedObjectContext?) {
super.init(entity: Self.entity(), insertInto: ctx)
self.cd_cover = UIImage.defaultImage
self.cd_nome = String.defaultName
self.cd_xFoldres = []
self.cd_xFoldres!.add(PUFolder(ctx: self.managedObjectContext))
self.cd_originalxFoldres = []
self.cd_porcessedxFoldres = []
}
}
and a few functions
to fetch the data
#FetchRequest(entity: PU.entity(), sortDescriptors: []) var photoUniq2:FetchedResults<PU >
what can cause the error and how I can solve it?