node.js - Error: req.flash() requires sessions -

i'm new node , i'm pretty sure i've set middle ware , express use flash messaging still error:

error: req.flash() requires sessions

setup

//express.js      var flash = require('connect-flash')       module.exports = function (app, config, passport) {          app.use(flash());      };  //route js      exports.loginget = function (req, res) {        res.render('users/login', {          title: 'login',          message: req.flash('error') //error in question        });      }; 

what else can make sure have set correctly , working?

from readme (emphasis mine):

flash messages stored in session. first, setup sessions usual enabling cookieparser , session middleware. then, use flash middleware provided connect-flash.

using express-sessions express 4, cookieparser no longer required.

var session = require('express-session');  //...   app.use(session({ cookie: { maxage: 60000 },                    secret: 'woot',                   resave: false,                    saveuninitialized: false}));