Table View is now shown in simülatör swift/xcode - swift

Question

hello i am new to learning swift. I want to save data in database and show it in tableview. But even though I do everything, the tableview does not appear in the simulator. white screen appears. Any idea about the reason? I looked at the previous questions but couldn't find an answer.
import UIKit
import CoreData
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource{
#IBOutlet weak var tableView: UITableView!
//tanımlamalar
var nameArray = [String]()
var idArray = [UUID]()
override func viewDidLoad() {
super.viewDidLoad()
//tableview gösterme
tableView.delegate = self
tableView.dataSource = self
//add butonu ekleme
navigationController?.navigationBar.topItem?.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.add, target: self, action: #selector(addButtonClicked))
}
//verileri getirme
func getData() {
let appDelegate = UIApplication.shared.delegate as! AppDelegate
let context = appDelegate.persistentContainer.viewContext
//getirme
let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName : "Paintings")
fetchRequest.returnsObjectsAsFaults = false
do{
let results = try context.fetch(fetchRequest)
for result in results as! [NSManagedObject] {
if let name = result.value(forKey: "name") as? String{
self.nameArray.append(name)
}
if let id = result.value(forKey: "id") as? UUID{
self.idArray.append(id)
}
//yeni veri eklenirse tableviewı reload et
self.tableView.reloadData()
}
}catch{
print("error")
}
}
//add butonuna tıklanırsa ne olacak
#objc func addButtonClicked() {
performSegue(withIdentifier: "DetailsVC", sender: nil)
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return nameArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell()
var content = cell.defaultContentConfiguration()
content.text = nameArray[indexPath.row]
cell.contentConfiguration = content
return cell
}
}