Is it not allowed to use code to register collectionViewCell ?

[Corotata]

If I register collectionViewCell in storyboard,it work well, but when I use a xib to create viewController,register collectionViewCell by code,it crash.

@IBDesignable
class EnterpriseUserCardCollectionViewCell: NibCollectionViewCell {
    override  func awakeFromNib() {
        super.awakeFromNib()
        self.contentView.layer.cornerRadius = 8
        self.contentView.clipsToBounds = true
    }
}

class TestCollectionViewController: UIViewController,UICollectionViewDataSource {
    @IBOutlet weak var collectionView: UICollectionView!
    override func viewDidLoad() {
        super.viewDidLoad()
        self.collectionView.dataSource = self
        self.collectionView.register(UINib(nibName: "EnterpriseUserCardCollectionViewCell", bundle: .main), forCellWithReuseIdentifier: "EnterpriseUserCardCollectionViewCell")
    }
    
     func numberOfSections(in collectionView: UICollectionView) -> Int {
        return 1
    }


     func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return 10
    }

     func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "EnterpriseUserCardCollectionViewCell", for: indexPath)
        return cell
    }
}