RxSwift cell register failure

Question

I use the MVVM architecture and after setting everything up there is no cell in the TableView and breakpoints in the cell file will not get hit.

In my code: controller:

 private lazy var tableView: BaseTableView = {
        let tableView = BaseTableView()
        tableView.register(MyCell.self, forCellReuseIdentifier: String(describing: MyCell.self))
        tableView.rowHeight = 148
        tableView.estimatedRowHeight = 148
        self.view.addSubview(tableView)
        tableView.snp.makeConstraints { (make) in
            make.top.bottom.left.right.equalToSuperview()
        }
        return tableView
    }()

let dataSource = RxTableViewSectionedReloadDataSource<MytSection>(configureCell: {(datasource, tableView, indexPath, model) -> UITableViewCell in
            let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: MyCell.self), for: indexPath) as! MyCell
            cell.model = model
            return cell
        })

viewModel.output
            .items
            .map { [MySection(header: "", items: $0)] }
            .bind(to: tableView.rx.items(dataSource: dataSource))
            .disposed(by: bag)

The breakpoint in the cell file was not triggered. I think the cell was not called, but my delegate and datasource are both bound properly.

I'd like to know why.