node.js - the code working right but i still get Error: Can't set headers after they are sent -


i working on code protect node.js login script brute fore attacks add this (express-rate-limit) code , worked , result want after redirect happen error massage

error: can't set headers after sent. @ validateheader (_http_outgoing.js:504:11) @ serverresponse.setheader (_http_outgoing.js:511:3) @ object.handler (/opt/lampp/htdocs/x/chessmult/regtest/using-passport-with-sequelize-and-mysql-master/node_modules/express-rate-limit/lib/express-rate-limit.js:25:17) @ /opt/lampp/htdocs/x/chessmult/regtest/using-passport-with-sequelize-and-mysql-master/node_modules/express-rate-limit/lib/express-rate-limit.js:79:30 @ memorystore.incr (/opt/lampp/htdocs/x/chessmult/regtest/using-passport-with-sequelize-and-mysql-master/node_modules/express-rate-limit/lib/memory-store.js:12:7)

i tried using 

return

with res.redirect still error code 

var ratelimit = require('express-rate-limit');    var loginacclimiter = new ratelimit({   windowms: 60*60*1000, // 1 hour window    delayafter: 1, // begin slowing down responses after first request    delayms: 3*1000, // slow down subsequent responses 3 seconds per request    max: 1, // start blocking after 5 requests     onlimitreached: (function (req,res) {      req.flash('thelimitlogin', 'error:you maked alot of wrong login not allowed login next hour ');      res.redirect('/signin')       return;         }) });   app.get('/signin', function (req, res, next) { var personlist = []; var personlist2 = [];  var person = {                 'theemaildexist':req.flash('emaildexist'),                 'limitlogin':req.flash('thelimitlogin')                   //'date':rows[i].ptime                 }  var person2 = {                  'theincorrectpass':req.flash('incorrectpass')                  //'date':rows[i].ptime                 }                 //console.log(rows[i].contact);                 personlist.push(person);                 personlist2.push(person2);          //console.log('threq',req.flash('emailmessage'));         res.render('signin',{"personlist": personlist,"personlist2": personlist2})         return;         //res.send();          });   app.post('/signin',loginacclimiter,   passport.authenticate('local-signin',{failureredirect: '/signin',failureflash : true}),   function(req, res,next) {     // if function gets called, authentication successful.     // `req.user` contains authenticated user.     sess = req.session;     sess.email=req.user.email;     res.redirect('/users/' + req.user.email);   });


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