java - Javafx Webengine only one website seems to be empty -

i'm developing browser opens url www.gumgum.com.
can't figure out why browser loads background image.

all other sites being loaded correctly.

edited example:

import com.sun.javafx.webkit.webconsolelistener;  import javafx.application.application; import javafx.scene.scene; import javafx.scene.layout.vbox; import javafx.scene.web.webview; import javafx.stage.stage; import javafx.scene.web.webengine;  public class browser extends application {     public static void main(string[] args)     {         system.setproperty("sun.net.http.allowrestrictedheaders", "true");         application.launch(args);     }      @suppresswarnings("restriction")     @override     public void start(final stage stage)     {         webview webview = new webview();         webengine webengine = webview.getengine();         webengine.load("http://www.gumgum.com");          webconsolelistener.setdefaultlistener(new webconsolelistener(){             @override             public void messageadded(webview webview, string message, int linenumber, string sourceid) {                 system.out.println("console: [" + sourceid + ":" + linenumber + "] " + message);             }         });         vbox root = new vbox();         root.getchildren().add(webview);         scene scene = new scene(root);         stage.setscene(scene);         stage.show();     } } 

can give me short advice what's wrong here? webview should able load site properly, or?

thank much,
jin

edit:

i added webconsolelistener , used statement reduce warnings: system.setproperty("sun.net.http.allowrestrictedheaders", "true");

now message left:

console: [http://www.gumgum.com/wp-content/themes/website-wp-theme/dist/js/main.js:2458]  syntaxerror: strict mode not allow function declarations in lexically nested statement. 

does know how solve last issue?

thanks in advance able provide.