Swiftでterminating with uncaught exception of type NSExceptionというエラーが出た。

Question

https://www.raywenderlich.com/5993-your-first-ios-app/lessons/36

の手順通りに、About the author ボタンとAboutAuthorViewControllerを結びつけて、buildしてAbout the author ボタンを押したら、

libc++abi.dylib: terminating with uncaught exception of type NSException

というエラーが出ました。

助けてください。Controllerのソースは以下です。

ViewController.swift

import UIKit

class ViewController: UIViewController {

  var currentValue = 0
  var targetValue = 0
  var score = 0
  var round = 0
  
  @IBOutlet weak var slider: UISlider!
  @IBOutlet weak var targetLabel: UILabel!
  @IBOutlet weak var scoreLabel: UILabel!
  @IBOutlet weak var roundLabel: UILabel!
  
  override func viewDidLoad() {
    super.viewDidLoad()
    let roundedValue = slider.value.rounded()
    currentValue = Int(roundedValue)
    startNewGame()
    
    let thumbImageNormal = #imageLiteral(resourceName: "SliderThumb-Normal")
    slider.setThumbImage(thumbImageNormal, for: .normal)
    
    let thumbImageHighlighted = #imageLiteral(resourceName: "SliderThumb-Highlighted")
    slider.setThumbImage(thumbImageHighlighted, for: .highlighted)
    
    let insets = UIEdgeInsets(top:0, left:14, bottom:0, right:14)
    
    let trackLeftImage = #imageLiteral(resourceName: "SliderTrackLeft")
    let trackLeftResizable = trackLeftImage.resizableImage(withCapInsets: insets)
    slider.setMinimumTrackImage(trackLeftResizable, for: .normal)
    
    let trackRightImage = #imageLiteral(resourceName: "SliderTrackRight")
    let trackRightResizable = trackRightImage.resizableImage(withCapInsets: insets)
    slider.setMaximumTrackImage(trackRightResizable, for: .normal)
    
  }

  @IBAction func showAlert() {
    
    let difference = abs(targetValue - currentValue)
    var points = 100 - difference
    
    score += points
    
    let title: String
    if difference == 0 {
      title = "Perfect!"
      points += 100
    } else if difference < 5 {
      title = "You almost had it!"
      if difference == 1 {
        points += 50
      }
    } else if difference < 10 {
      title = "Pretty good!"
    } else {
      title = "Not even close..."
    }
    
    let message = "You scored (points) points"
    
    let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
    
    let action = UIAlertAction(title: "OK", style: .default, handler: {
      action in
      self.startNewRound()
    })
    
    alert.addAction(action)
    
    present(alert, animated: true, completion: nil)
    
  }
  
  @IBAction func sliderMoved(_ slider: UISlider) {
    let roundedValue = slider.value.rounded()
    currentValue = Int(roundedValue)
  }
  
  func startNewRound() {
    round += 1
    targetValue = Int.random(in: 1...100)
    currentValue = 50
    slider.value = Float(currentValue)
    updateLabels()
  }
  
  func updateLabels() {
    targetLabel.text = String(targetValue)
    scoreLabel.text = String(score)
    roundLabel.text = String(round)
  }
  
  @IBAction func startNewGame() {
    score = 0
    round = 0
    startNewRound()
  }
  
}

AboutAuthorViewController.swift

import UIKit

class AboutAuthorViewController: UITableViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func close() {
        dismiss(animated: true, completion: nil)
    }

}

AboutViewController.swift

import UIKit
import WebKit

class AboutViewController: UIViewController {

    @IBOutlet weak var webView: WKWebView!
    
  override func viewDidLoad() {
    super.viewDidLoad()
    if let htmlPath = Bundle.main.path(forResource: "BullsEye", ofType: "html"){
        let url = URL(fileURLWithPath: htmlPath)
        let request = URLRequest(url: url)
        webView.load(request)
    }
  }
  
  @IBAction func close() {
    dismiss(animated: true, completion: nil)
  }
  
}

Main.storyboardのスクショは以下です。

Comments

[MasakiHori]

ソースコード下部に表示されているエラーをすべて追記してください

[aaaaa22222]

2019-08-23 15:54:56.729262+0900 BullsEye[2303:2518499] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UITableViewController loadView] instantiated view controller with identifier "UIViewController-txn-hs-ABh" from storyboard "Main", but didn't get a UITableView.'
*** First throw call stack:
(
0 CoreFoundation 0x0000000107c008db __exceptionPreprocess + 331
1 libobjc.A.dylib 0x00000001061b8ac5 objc_exception_throw + 48
2 CoreFoundation 0x0000000107c00735 +[NSException raise:format:] + 197
3 UIKitCore 0x0000000109e8c827 -[UITableViewController loadView] + 621
4 UIKitCore 0x0000000109e9bd04 -[UIViewController loadViewIfRequired] + 172
5 UIKitCore 0x0000000109e9c524 -[UIViewController view] + 27
6 UIKitCore 0x0000000109dc35b4 -[_UIFullscreenPresentationController _setPresentedViewController:] + 89
7 UIKitCore 0x0000000109db76aa -[UIPresentationController initWithPresentedViewController:presentingViewController:] + 133
8 UIKitCore 0x0000000109eaf18a -[UIViewController _presentViewController:withAnimationController:completion:] + 3700
9 UIKitCore 0x0000000109eb1dd7 __63-[UIViewController _presentViewController:animated:completion:]_block_invoke + 98
10 UIKitCore 0x0000000109eb22ef -[UIViewController _performCoordinatedPresentOrDismiss:animated:] + 511
11 UIKitCore 0x0000000109eb1d3e -[UIViewController _presentViewController:animated:completion:] + 172
12 UIKitCore 0x0000000109eb1f9c -[UIViewController presentViewController:animated:completion:] + 150
13 UIKitCore 0x000000010a6367e2 __74-[UIStoryboardPresentationSegueTemplate newDefaultPerformHandlerForSegue:]_block_invoke + 133
14 UIKitCore 0x000000010a63b4d3 -[UIStoryboardSegueTemplate _performWithDestinationViewController:sender:] + 276
15 UIKitCore 0x000000010a63b391 -[UIStoryboardSegueTemplate _perform:] + 82
16 UIKitCore 0x000000010a63b653 -[UIStoryboardSegueTemplate perform:] + 157
17 UIKitCore 0x000000010a4a0624 -[UIApplication sendAction:to:from:forEvent:] + 83
18 UIKitCore 0x0000000109ef58d5 -[UIControl sendAction:to:forEvent:] + 67
19 UIKitCore 0x0000000109ef5bf2 -[UIControl _sendActionsForEvents:withEvent:] + 450
20 UIKitCore 0x0000000109ef4ba8 -[UIControl touchesEnded:withEvent:] + 583
21 UIKitCore 0x000000010a4d94e6 -[UIWindow _sendTouchesForEvent:] + 2547
22 UIKitCore 0x000000010a4dabca -[UIWindow sendEvent:] + 4079
23 UIKitCore 0x000000010a4b930e -[UIApplication sendEvent:] + 356
24 UIKitCore 0x000000010a5892b3 __dispatchPreprocessedEventFromEventQueue + 3232
25 UIKitCore 0x000000010a58bbd9 __handleEventQueueInternal + 5911
26 CoreFoundation 0x0000000107b67db1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
27 CoreFoundation 0x0000000107b67633 __CFRunLoopDoSources0 + 243
28 CoreFoundation 0x0000000107b61cef __CFRunLoopRun + 1231
29 CoreFoundation 0x0000000107b614d2 CFRunLoopRunSpecific + 626
30 GraphicsServices 0x000000010fccc2fe GSEventRunModal + 65
31 UIKitCore 0x000000010a49efc2 UIApplicationMain + 140
32 BullsEye 0x00000001058d08cb main + 75
33 libdyld.dylib 0x000000010900d541 start + 1
34 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

です！

[hameji]

質問を編集し、storyboardのスクリーンショットと
viewcontrollerのコードを全部追記していただけると、
答えがつくと思います。

[aaaaa22222]

編集しました！

Answer 1

とりあえず

class AboutAuthorViewController: UITableViewController {

このviewcontroller、TableViewControllerに必要なものがほとんど入ってないですけど、、、
なので、遷移した瞬間に落ちるのではないでしょうか？

storyboardを見ると、tableviewである必要もなさそうですが、
ひょっとして、uiviewcontrollerの書き間違いですか？

もし、tableviewである必要があるならtableViewcontrollerを勉強してみると解決すると思います。