com.vaadin.flow.server.AmbiguousRouteConfigurationException

I try to develope an application with flow looking the way that was used for Bakery App. In Bakery there is the LoginView which has @Route (default) end StorefrontView which has @RouteAlias(value = BakeryConst.PAGE_ROOT, layout = MainView.class) that’s the same of LogingView. If I use the same schema for my app during compilation I have the error AmbiguousRouteConfigurationException and not for Bakery.
Someone has an answer for this? Of course BakeryConst.PAGE_ROOT is “”.
Thanks

I’ve found that @Route and @Route(“”) are different!!