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我正在尝试UICollectionViewDiffableDataSource为我的collectionView. 我的代码编译得很好，但是我第一次对它应用快照时一直遇到这个错误，并出现以下错误：

由于未捕获的异常“NSInternalInconsistencyException”而终止应用程序，原因：“无效参数不满足：self.supplementaryViewProvider || (self.supplementaryReuseIdentifierProvider && self.supplementaryViewConfigurationHandler)'

这是我的代码：

    var groups: [Group] = [Group]()
    var dataSource: UICollectionViewDiffableDataSource<Section, Group>!

    // MARK: - View Life Cycle
    override func viewDidLoad() {
        super.viewDidLoad()

        self.searchBar.delegate = self
        self.groups = DummyData.groups

        setupDataSource()
    }

    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        performSearch(searchQuery: nil)
    }


    // MARK: - Helper Functions
    func performSearch(searchQuery: String?) {
        let filteredGroups: [Group]
        if let searchQuery = searchQuery, !searchQuery.isEmpty {
            filteredGroups = groups.filter { $0.contains(query: searchQuery) }
        } else {
            filteredGroups = groups …