How to solve constraints issue: Position is ambiguous for UIButton?

I have placed UIButton to right view of textfield. But I see the below warning

My code for UIButton:

private lazy var myButton : UIButton = {
    let button = UIButton()
    var config = UIButton.Configuration.plain()
    config.contentInsets = NSDirectionalEdgeInsets(top: 0, leading: 0, bottom: 0, trailing: 16)
    button.configuration = config
    button.frame = CGRect(x:   CGFloat(myTextfield.frame.size.width - 16), y:(myTextfield.frame.size.height - 16) / 2, width: CGFloat(40), height: CGFloat(30))
    button.contentMode = .scaleAspectFit
    button.backgroundColor = .clear
    button.translatesAutoresizingMaskIntoConstraints = false
    button.setImage(passwordButtonImage, for: .normal)
    button.addTarget(self, action: #selector(self.toggle(_:)), for: .touchUpInside)
    return button
}()

code for adding it to textfield:

@IBOutlet private weak var mytextField: UITextField  {
    didSet {
       
        mytextField.rightView = myButton
        mytextField.rightViewMode = .always
    }
}

Removing translatesAutoresizingMaskIntoConstraints to false solved my issue. As I am not giving any constraints manually I don't need this.