By clicking the tab item the application closes

I'm making an application that has a tab, the first tab I put a webview, the second a map, when I enter the app and click on the map item, the app closes, the error happens after I refer to the map ViewController

log: 2018-09-11 17: 21: 54.849452-0300 celebrate club [4169: 1061368] Could not inset legal attribution from corner 4 (lldb)

ViewController:

import UIKit
import WebKit
import MapKit

class ViewController: UIViewController {
@IBOutlet weak var webview: WKWebView!

@IBOutlet weak var mapview: MKMapView!




override func viewDidLoad() {
    super.viewDidLoad()
    let url = URL(string: "http://google.com")
    let UrlRequest = URLRequest(url:url!)
    webview.load(UrlRequest) 

}




override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

}

}