There is an error in my code: not initialized at super.init call

Question

Tell me what am I doing wrong? why is the error happening in my code? I can't figure it out, an error like this appears : not initialized at super.init call

enter image description here

I can't find any information, I will be grateful for any help, maybe it will be useful to someone in the future too

import AVKit
import SwiftUI


class UIVideoPlayer: UIView {
var videoURL : String
var playerLayer = AVPlayerLayer()

override init(frame: CGRect) {
    
    super.init(frame: frame)
    
    
    
    guard let url = URL(string: videoURL) else { return }

    let player = AVPlayer(url: url)
    //self.player = player
    player.isMuted = true
    player.play()
    
    NotificationCenter.default.addObserver(forName: .AVPlayerItemDidPlayToEndTime, object: player.currentItem, queue: .main) { _ in
                    player.seek(to: CMTime.zero)
                    player.play()
        


    }
  
    playerLayer.player = player
    playerLayer.videoGravity = AVLayerVideoGravity(rawValue: AVLayerVideoGravity.resizeAspectFill.rawValue)
    
    layer.addSublayer(playerLayer)
}

override func layoutSubviews() {
    super.layoutSubviews()
    playerLayer.frame = bounds
}

required init?(coder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

}

struct PlayersView: UIViewRepresentable {

func makeUIView(context: Context) -> UIVideoPlayer {
    return UIVideoPlayer()
}

func updateUIView(_ uiView: UIVideoPlayer, context: Context) {
    
}
}

Answer 1

As you declared "videoURL" as store property

Initialization is the process of preparing an instance of a class, structure, or enumeration for use. This process involves setting an initial value for each stored property on that instance and performing any other setup or initialization that’s required before the new instance is ready for use.

https://docs.swift.org/swift-book/LanguageGuide/Initialization.html

so, you can solve this by using "Explicitly unwrapped Optional"

var videoURL : String!

Or you can declare videoURL as Optional

var videoURL : String?

Or assign initial value to "videoURL" before calling Super.init

override init(frame: CGRect) {
self.videoURL = "Your URL"
super.init(frame: frame)

Class initialization in Swift is a two-phase process. In the first phase, each stored property is assigned an initial value by the class that introduced it. Once the initial state for every stored property has been determined, the second phase begins, and each class is given the opportunity to customize its stored properties further before the new instance is considered ready for use.

https://docs.swift.org/swift-book/LanguageGuide/Initialization.html#ID216