swiftにおけるPickerの閉じるボタン

Xcode version11.5
Swift5

下のstoryboadのようにTextFieldをタップするとpickerがしたから出てきて、選択が完了した後に閉じるボタンを押すとpickerを閉じるようにしたいのですが、以下のようなエラーを吐いてしまいます。
Thread 1: Exception: "-[Picker.ViewController infoTextField:]: unrecognized selector sent to instance 0x102f0a800"
どうか解決方法を教えていただきたいです。

swift
1import UIKit
2
3class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource {
4    func numberOfComponents(in pickerView: UIPickerView) -> Int {
5        return 3
6    }
7    
8    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
9        switch component {
10        case 0:
11            return hourList.count
12        case 1:
13            return minuteList.count
14        case 2:
15            return categoryList.count
16        default:
17            return 0
18        }
19    }
20    var tmpHour = "--"
21    var tmpMinute = "--"
22    var tmpCategory = "--"
23    
24    let hourList = ["0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23"]
25    var minuteList = ["00", "01", "02", "03", "04", "05", "06", "07", "08", "09"]
26    let categoryList = ["食事", "勉強", "ハミガキ", "就寝", "起床", "薬", "その他"]
27    
28    override func viewDidLoad() {
29        super.viewDidLoad()
30        // Do any additional setup after loading the view.
31        for i in 10..<60 {
32            minuteList.append(String(i))
33            //            print(i)
34        }
35        myPicker = UIPickerView()
36        myPicker.delegate = self
37        myPicker.dataSource = self
38        myPicker.selectRow(0, inComponent: 0, animated: false)
39        myPicker.selectRow(1, inComponent: 1, animated: false)
40        myPicker.selectRow(2, inComponent: 2, animated: false)
41        //閉じるツールバーの生成
42        let kbToolBar = UIToolbar(frame: CGRect(x: 0, y: 0, width: 320, height: 40))
43        kbToolBar.barStyle = UIBarStyle.default  // スタイルを設定
44        kbToolBar.sizeToFit()  // 画面幅に合わせてサイズを変更
45        
46        let spacer = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.flexibleSpace, target: self, action: nil)
47        // 閉じるボタン
48        let commitButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonItem.SystemItem.done, target: self, action: #selector(ViewController.commitButtonTapped))
49        kbToolBar.items = [spacer, commitButton]
50        
51        infoTextField.inputView = myPicker
52        infoTextField.inputAccessoryView = kbToolBar
53    }
54    @objc func commitButtonTapped (){
55        self.view.endEditing(true)
56        self.resignFirstResponder()
57    }
58    
59    func getCategory() -> String {
60        return self.tmpCategory
61    }
62    @IBOutlet weak var infoTextField: UITextField!
63    
64    private var myPicker: UIPickerView!
65    func pickerView(_ pickerView: UIPickerView,
66                    titleForRow row: Int,
67                    forComponent component: Int) -> String? {
68        switch component {
69        case 0:
70            return hourList[row]
71        case 1:
72            return minuteList[row]
73        case 2:
74            return categoryList[row]
75        default:
76            return "error"
77        }
78    }
79    
80    func pickerView(_ pickerView: UIPickerView,
81                    didSelectRow row: Int,
82                    inComponent component: Int) {
83        switch component {
84        case 0:
85            tmpHour = hourList[row]
86            infoTextField.text = tmpHour + ": " + tmpMinute + " , " + tmpCategory
87        case 1:
88            tmpMinute = minuteList[row]
89            infoTextField.text = tmpHour + ": " + tmpMinute + " , " + tmpCategory
90        case 2:
91            tmpCategory = categoryList[row]
92            infoTextField.text = tmpHour + ": " + tmpMinute + " , " + tmpCategory
93        default:
94            break
95        }
96    }
97    
98}
99
100