HTML import on VAADIN 12 springboot app whith eclipse IDE

General
1

Hi, i’m trying to integrate html import in my vaadin project.
I’ve a @route"anagraphycs" page whith the import. when page launched there is a pop-up error “error loading /html/_menu.html”

Here’s code

import com.vaadin.flow.component.UI;
import com.vaadin.flow.component.html.Div;
import com.vaadin.flow.router.Route;
import com.vaadin.flow.shared.ui.LoadMode;

@Route(“anagrafici”)
public class RouteAnagrafici extends Div {
private RouteAnagrafici() {
//UI.getCurrent().getPage().reload();
UI.getCurrent().getPage().addHtmlImport(“/html/_menu”, LoadMode.EAGER);

}

}

THANKS.
Valentino