anauthorized acces when call http://localhost:8080/callback?redirect_uri=/private/somepage/test

CustomEndpointConfig.java

  OAuth2Auth authProvider = OAuth2Auth.create(vertx, OAuth2FlowType.AUTH_CODE, new JsonObject()
                .put("clientID", "xxxx")
                .put("clientSecret", "xxxx")
                .put("site", "https://github.com/login")
                .put("tokenPath", "/oauth/access_token")
                .put("authorizationPath", "/oauth/authorize"));


        // create a oauth2 handler on our domain: "http://localhost:8080"
        OAuth2AuthHandler oauth2 = OAuth2AuthHandler.create(authProvider, "http://localhost:8080");
        // these are the scopes
      //  oauth2.addAuthority("profile");
        // setup the callback handler for receiving the GitHub callback
        oauth2.setupCallback(router.get("/callback"));

        // Serve the static private pages from directory 'private'
        router.route("/private/*").handler(oauth2);

        // mount some handler under the protected zone
        router.route("/private/somepage/test").handler(rc -> {
            final Session session = rc.session();
            rc.response().end("Welcome to the protected resource! :\n\n"+rc.user().principal().encodePrettily());
        });

        router.get("/").handler(ctx -> {
            ctx.response().putHeader("content-type", "text/html").end("Hello <br><a href=\"/private/\">Protected by Github</a>");
        });