Hi have this error; Context in environment is not connected to a persistent store coordinator: <NSManagedObjectContext: 0x6000006d8b60>

My DataController.swift:

import Foundation
import CoreData

class DataController: ObservableObject {
    let container: NSPersistentContainer

    init() {
        container = NSPersistentContainer(name: "History")

        container.loadPersistentStores { _, error in
            if let error = error {
                fatalError("Failed to load persistent stores: \(error)")
            }

            self.container.viewContext.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
        }
    }
}

extension DataController {
    func saveHistory(category: UUID, chatid: UUID, messages: [ChatMessage]) {
        container.performBackgroundTask { context in
            let history = Histories(context: context)
            history.id = UUID()
            history.category = category
            history.chatid = chatid
            history.messages = NSOrderedSet(array: messages)
            history.date = Date()

            do {
                try context.save()
            } catch {
                print("Failed to save history: \(error)")
            }
        }
    }
}

And my HistoryView.swift is:

import SwiftUI
import CoreData

struct HistoryView: View {
    @EnvironmentObject var DM: DataManager
    @State var contentHasScrolled = false
    @Environment(\.managedObjectContext) private var viewContext
    @FetchRequest(entity: Histories.entity(), sortDescriptors: []) var histories: FetchedResults<Histories>

    ...

I can't fetch history data. Maybe is empty i don't know yet.

Please anybody can help me?

Please use search before posting questions. Similar was already discussed.

https://www.hackingwithswift.com/forums/swiftui/error-context-in-environment-is-not-connected-to-a-persistent-store-coordinator/10648