Cannot find 'Session' in Scope - Entity not found in core data when shared to widget

Question

I started a new project in Swift with core data, and I later added a widget extension to my app. I wanted to share the core data model between the widget extension and the app. I added the data model as a target in the widget extension as well as the Persistence code file. However, for one of my entities, it seems to return that it is not in scope for some reason. I tried creating a new placeholder entity Pokemon but it does not seem to produce the same error.

Persistence file

import CoreData

struct PersistenceController {
    static let shared = PersistenceController()

    static var preview: PersistenceController = {
        let result = PersistenceController(inMemory: true)
        let viewContext = result.container.viewContext
        let newUserData = Userdata(context: viewContext)
        newUserData.hourly = 15.3
        let newJd = Pokemon(context: viewContext)
        newJd.jd = 3.0
        let newSession = Session(context: viewContext) // Error "Cannot find 'Session' in scope"
        newSession.id = UUID()
        newSession.start = Date()
        newSession.end = Date()
        do {
            try viewContext.save()
        } catch {
            // Replace this implementation with code to handle the error appropriately.
            // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
            let nsError = error as NSError
            fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
        }
        return result
    }()

    let container: NSPersistentContainer

    init(inMemory: Bool = false) {
        container = NSPersistentContainer(name: "FManger")
        if inMemory {
            container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null")
        }
        container.loadPersistentStores(completionHandler: { (storeDescription, error) in
            if let error = error as NSError? {
                // Replace this implementation with code to handle the error appropriately.
                // fatalError() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.

                /*
                Typical reasons for an error here include:
                * The parent directory does not exist, cannot be created, or disallows writing.
                * The persistent store is not accessible, due to permissions or data protection when the device is locked.
                * The device is out of space.
                * The store could not be migrated to the current model version.
                Check the error message to determine what the actual problem was.
                */
                fatalError("Unresolved error \(error), \(error.userInfo)")
            }
        })
    }
}

Core Data

What could be causing this problem?