按下搜索栏时切换到另一个视图 controller 时意外发现 nil

Question

I have two view controllers that both have a search bar and a table view. They have the same data but different cell layouts. The first view controller is SearchBarViewController and when a cell is selected to segues the next view controller, which is SearchesViewController . I wan't to go back to SearchesViewController because they're need to be different cells.

SearchBarViewController didselectRowAt:

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    let searchesVC = storyboard?.instantiateViewController(withIdentifier: "SearchesViewController") as? SearchesViewController
    searchesVC?.search = [search[indexPath.row]]
    tableView.deselectRow(at: indexPath, animated: true)
    self.navigationController?.pushViewController(searchesVC!, animated: true)
    
}

SearchesViewController searchBarTextDidBeginEditing:

func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
    searchActive = false
    self.present(UINavigationController(rootViewController: SearchBarViewController()), animated: false, completion: nil)
    
}

I keep getting a Thread 1: Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional value in tableView.delegate = self . Any would be appreciated!

where crash occurred:

   override func viewDidLoad() {
    super.viewDidLoad()
    
    tableView.delegate = self //CRASH
    tableView.dataSource = self
    searchBar.delegate = self
    retriveData()
    print(search)
   }

Answer 1

Instead of present you need to pop controller

func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
    searchActive = false
     self.navigationController?.popViewController(animated: true)
    
}