Thread 1: signal SIGABRT

Question

前提・実現したいこと

swiftで時間割アプリを作っています。アプリはstoryboardを使わずにコードで書いています。
ボタンを押すと次の画面へ遷移する部分を作っているのですがThread 1: signal SIGABRTが出ます。
遷移先のNextViewControllerにはまだ何も記述していません。
接続がうまくいっていなさっそうなのはわかるのですがswift初学者で解決法がわかりません、よろしくお願いいたします。

発生している問題・エラーメッセージ

Could not cast value of type 'UIViewController' (0x10d72f750) to 'sample1_1.NextViewController' (0x106354540).
2020-06-15 01:20:15.184104+0900 sample1-1[24873:12289477] Could not cast value of type 'UIViewController' (0x10d72f750) to 'sample1_1.NextViewController' (0x106354540).
(lldb) 

該当のソースコード

ViewController.swift

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
    
    let screenWidth = self.view.bounds.width
    let screenHeight = self.view.bounds.height//スクリーンサイズ取得
    let testDraw = TestDraw(frame: CGRect(x :0,y:0,width:screenWidth,height:screenHeight))
    self.view.addSubview(testDraw)
    
    testDraw.isOpaque = false
        
    let label = UILabel()//タイトル時間割
        label.frame = CGRect(x: 10,y: 100,width: screenWidth-20 ,height:30)
        label.text = "時間割"
        self.view.addSubview(label)
        label.textColor = UIColor.red
        label.textAlignment = NSTextAlignment.center
        label.font = UIFont.systemFont(ofSize: 30)
        
    
    let monday = UILabel()
        monday.frame = CGRect(x:25,y:160,width: 78,height: 20)
        monday.text = "月"
        self.view.addSubview(monday)
        monday.textAlignment = NSTextAlignment.center
        
    let tuesday = UILabel()
        tuesday.frame = CGRect(x: 103,y:160,width: 78,height: 20)
        tuesday.text = "火"
        self.view.addSubview(tuesday)
        tuesday.textAlignment = NSTextAlignment.center
        
    let wednesday = UILabel()
        wednesday.frame = CGRect(x:181,y:160,width: 78,height: 20)
        wednesday.text = "水"
        self.view.addSubview(wednesday)
        wednesday.textAlignment = NSTextAlignment.center
        
    let thursday = UILabel()
        thursday.frame = CGRect(x: 259,y: 160,width: 78,height:20)
        thursday.text = "木"
        self.view.addSubview(thursday)
        thursday.textAlignment = NSTextAlignment.center
        
    let friday = UILabel()
        friday.frame = CGRect(x: 337,y: 160,width: 78,height: 20)
        friday.text = "金"
        self.view.addSubview(friday)
        friday.textAlignment = NSTextAlignment.center
        
    let cl1 = UILabel()
        cl1.frame = CGRect(x:0,y:180,width: 25,height: 124)
        cl1.text = "1"
        self.view.addSubview(cl1)
        cl1.textAlignment = NSTextAlignment.center
        
        let cl2 = UILabel()
        cl2.frame = CGRect(x:0,y:304,width: 25,height: 124)
        cl2.text = "2"
        self.view.addSubview(cl2)
        cl2.textAlignment = NSTextAlignment.center
        
        let cl3 = UILabel()
        cl3.frame = CGRect(x:0,y:428,width: 25,height: 124)
        cl3.text = "3"
        self.view.addSubview(cl3)
        cl3.textAlignment = NSTextAlignment.center
        
        let cl4 = UILabel()
        cl4.frame = CGRect(x:0,y:552,width: 25,height: 124)
        cl4.text = "4"
        self.view.addSubview(cl4)
        cl4.textAlignment = NSTextAlignment.center
        
        let cl5 = UILabel()
        cl5.frame = CGRect(x:0,y:676,width: 25,height: 124)
        cl5.text = "5"
        self.view.addSubview(cl5)
        cl5.textAlignment = NSTextAlignment.center
        
        
        let monday1 = UIButton()
        monday1.frame = CGRect(x:0,y:180,width: 123,height: 77)
        monday1.setTitle("mondayclass1", for: UIControl.State.normal)
        monday1.titleLabel?.font = UIFont.systemFont(ofSize: 3)
        monday1.backgroundColor = UIColor.init(red: 0.9, green: 0.9, blue: 0.9, alpha: 1)
        monday1.addTarget(self, action: #selector(monday1Button), for: .touchUpInside)
        self.view.addSubview(monday1)
        
        
    }
    
    @objc func monday1Button(sender: UIButton){
        let storyboard : UIStoryboard = self.storyboard!
        let nextView = storyboard.instantiateViewController(withIdentifier: "next") as! NextViewController
        self.present(nextView, animated: true,completion: nil)
    }
            
        }

TestDraw.swift

import UIKit

class TestDraw: UIView {

    /*
    // Only override draw() if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func draw(_ rect: CGRect) {
        // Drawing code
    }
    */
 
        override func draw(_ rect: CGRect) {
            let line = UIBezierPath(); //インスタンス作成
            line.move(to: CGPoint(x :0,y :160));//始発点
            line.addLine(to: CGPoint(x :415,y :160))
            line.addLine(to: CGPoint(x :415,y:800))
            line.addLine(to: CGPoint(x :0,y:800))//帰着点
            line.close()//線を結ぶ
            UIColor.red.setStroke()//色
            line.lineWidth = 1//線の太さ
            line.stroke()//描写
            
            let line2 = UIBezierPath();//
            line2.move(to: CGPoint(x :25,y :160))
            line2.addLine(to: CGPoint(x :25,y: 800))
            line2.close()
            line2.lineWidth = 1
            UIColor.red.setStroke()
            line2.stroke()
            
            let line3 = UIBezierPath();
            line3.move(to: CGPoint(x :103,y:160))
            line3.addLine(to: CGPoint(x :103,y:800))
            line3.close()
            UIColor.red.setStroke()
            line3.lineWidth = 1
            line3.stroke()
            
            let line4 = UIBezierPath();
            line4.move(to: CGPoint(x: 181,y: 160))
            line4.addLine(to: CGPoint(x: 181,y: 800))
            line4.close()
            UIColor.red.setStroke()
            line4.lineWidth = 1
            line4.stroke()
            
            let line5 = UIBezierPath();
            line5.move(to: CGPoint(x: 259,y: 160))
            line5.addLine(to: CGPoint(x: 259,y:800))
            line5.close()
            UIColor.red.setStroke()
            line5.lineWidth = 1
            line5.stroke()
            
            let line6 = UIBezierPath();
            line6.move(to: CGPoint(x: 337,y: 160))
            line6.addLine(to: CGPoint(x: 337,y:800))
            line6.close()
            UIColor.red.setStroke()
            line6.lineWidth = 1
            line6.stroke()
            
            
            let hLine1 = UIBezierPath();
            hLine1.move(to: CGPoint(x:0,y:180))
            hLine1.addLine(to: CGPoint(x:415,y:180))
            hLine1.close()
            UIColor.red.setStroke()
            hLine1.lineWidth = 1
            hLine1.stroke()
            
            let hLine2 = UIBezierPath();
            hLine2.move(to: CGPoint(x:0,y:304))
            hLine2.addLine(to: CGPoint(x:415,y:304))
            hLine2.close()
            UIColor.red.setStroke()
            hLine2.lineWidth = 1
            hLine2.stroke()
            
            let hLine3 = UIBezierPath();
            hLine3.move(to: CGPoint(x:0,y:428))
            hLine3.addLine(to: CGPoint(x:415,y:428))
            hLine3.close()
            UIColor.red.setStroke()
            hLine3.lineWidth = 1
            hLine3.stroke()
            
            let hLine4 = UIBezierPath();
            hLine4.move(to: CGPoint(x: 0,y:552))
            hLine4.addLine(to: CGPoint(x:415,y:552))
            hLine4.close()
            UIColor.red.setStroke()
            hLine4.lineWidth = 1
            hLine4.stroke()
            
            let hLine5 = UIBezierPath();
            hLine5.move(to: CGPoint(x: 0,y:676))
            hLine5.addLine(to: CGPoint(x: 415,y:676))
            hLine5.close()
            UIColor.red.setStroke()
            hLine5.lineWidth = 1
            hLine5.stroke()
        

}
}

#追記（2020.6.15）
NextViewController.swiftのコードはこのように作ってあります

import UIKit

class NextViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

       
    }
    

   
}

Comments

[hoshi-takanori]

Storyboard で UIViewController のクラスを「NextViewController」と指定していると思いますが、Swift のソースコードに NextViewController が存在しない、または UIViewController のサブクラスになってないのでは。

[burro]

初心者で申し訳ないのですが、具体的にはどう修正したら良いのでしょうか？

[burro]

すいません！custom classのClassにNextViewControllerと入れてなくて、書いたら解決しました！ありがとうございました！

[hoshi-takanori]

それは良かったです。????????????

Answer 1

コメント欄への解説より解決しました。ありがとうございました