我在表格视图中实施SkyFloatingLabelTextField时遇到错误

Question

import UIKit
import SkyFloatingLabelTextField

class TryViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {
    @IBOutlet var OutletTableViewCell: UITableView!
    var arrdata = ["fghyj","dfghj","kujyhtgfd","ikujyht"]
    var arrdataone = ["fghyj","dfghj","kujyhtgfd","ikujyht"]

    func numberOfSections(in tableView: UITableView) -> Int {
        return 2
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        switch section {
        case 0:
            return 4
        case 1:
            return 4
        default:
            return 0
        }
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let variable = UITableViewCell()
        switch indexPath.section {
        case 0:
            let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)as! TableViewCell

            cell.userinputone.placeholder = arrdata[indexPath.row]

            //let userInput = cell.viewWithTag(0) as! SkyFloatingLabelTextField
            // cell.userInput.placeholder = Array[indexPath.row]
           // userInput.placeholder = arrdata[indexPath.row]
            return cell
        case 1:
            let cell1 = tableView.dequeueReusableCell(withIdentifier: "cell1", for: indexPath)as! TableViewCelltwo
            cell1.userinputtwo.placeholder = arrdataone[indexPath.row]

            return cell1

        default:
            print("Default Selected")
        }
        return variable
    }
}