Sendbird UIKit - iOS / Compilation error / SBUUserMessageCell


When I try to create a class in order to customize the chat messages, I’m getting an error at build time?
Other components work fine, no issues with most of them.
Any idea?
Using SendbirdUIKit, latest version.

My class

import Foundation
import SendbirdUIKit
import UIKit
class CustomUserMessageCell : SBUUserMessageCell
    override func setupStyles() {
        self.messageTextView.backgroundColor = .systemBlue
        self.messageContentView.backgroundColor = .black
        self.messageContentView.tintColor = .white

Error message