Swift：UICollectionView 必须使用非零布局参数初始化

Question

当我尝试运行代码时，我得到了异常：UICollectionView 必须使用非零布局参数进行初始化。 我尝试了几件事，但我无法让它工作。

import UIKit

protocol HomeViewControllerDelegate: AnyObject {
    func didTapMenuButton()
}

class HomeViewController: UICollectionViewController, UICollectionViewDelegateFlowLayout {

    let cellId = "cellId"

    weak var delegate: HomeViewControllerDelegate?

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .systemBackground
        title = "Start"
    
        navigationItem.leftBarButtonItem = UIBarButtonItem(image: UIImage(systemName: "list.dash"), style: .done, target: self, action: #selector(didTapMenuButton))
    
        collectionView?.register(TeamCell.self, forCellWithReuseIdentifier: cellId)
    }

    override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 6
    }

    override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! TeamCell
        return cell
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return CGSize(width: (view.frame.width/3) - 16, height: 100)
   }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
    return UIEdgeInsets(top: 8, left: 8, bottom: 8, right: 8)
   }

    @objc func didTapMenuButton() {
    delegate?.didTapMenuButton()
    }
}

class TeamCell: UICollectionViewCell {
    override init(frame: CGRect) {
        super.init(frame: frame)
        setup()
    }

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

    func setup() {
        self.backgroundColor = .blue
    }
}

这是我的代码。 我是 Swift 的新手，所以对我要温柔。

谢谢您的帮助 ！