Question: [![enter image description here](https://i.stack.imgur.com/WecAn.png)](https://i.stack.imgur.com/WecAn.png)

Why do i keep getting this error? what is the problem?

Answer: 
Have you registered the cell class? 

```
class SideMenuViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    ...

    override func viewDidLoad() {
        super.viewDidLoad()

        self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "SideMenuTableViewCell")
    }

    ...

}

```
Use [Kingfisher Libarary](https://github.com/onevcat/Kingfisher)

```
imageView.kf_setImageWithURL(NSURL(string: "http://your_image_url.png")!)

```