Node js : TypeError: Object #<Object> has no method 'existsSync'

I need to upload file and I am using node js in server(version : [nodemon] v1.0.1). The following code worked before 4 months after that I did n't check it and yesterday I run it again. But it is not working and I got `"TypeError: Object #<Object> has no method 'existsSync'"` error in console. Following is my code ``` var express = require('express'); var path = require('path'); var app = module.exports = express(); var calenderid; var EventEmitter = require('events').EventEmitter, https = require('https'), http = require('http'), querystring = require('querystring'), url = require('url'); var path2; app.configure(function() { app.use(express.compress()); app.set('views', __dirname + '/views'); app.set('view engine', 'jade'); app.use(express.cookieParser()); app.use(express.session({ secret : 'foobar' })); app.use(express.bodyParser({ uploadDir : __dirname + '/uploads' })); app.use(express.methodOverride()); app.use(app.router); app.use(express.static(__dirname + '/public')); }); var http = require('http'); var mysql = require('mysql'); var connection = mysql.createConnection({ host : 'localhost', port : '3306', database : 'db', user : 'root', password : '', }); connection.connect(); var fs = require('fs'); app.post('/file-upload/:id', function(req, res) { var tble = "image"; var id = req.params.id; console.log("req.files.files" + JSON.stringify(req.files), req.files.files.length); var tmp_path = req.files.files[0].path; console.log("hiii temp path" + tmp_path, typeof tmp_path); // var firstIdx =0 var lastidx = tmp_path.lastIndexOf("/"); var path = tmp_path.substring(0, lastidx); console.log("target path sub" + lastidx, tmp_path); // var target_path = path+"\"+req.files.files[0].name; var dirExists = fs.existsSync(__dirname + "/uploads/" + id); console.log(dirExists); if (!dirExists) { fs.mkdirSync(__dirname + "/uploads/" + id); target_path = path + "/" + id + "/" + req.files.files[0].name; } else { target_path = path + "/" + id + "/" + req.files.files[0].name; } console.log("hiii target_path" + target_path); fs.rename(tmp_path, target_path, function(err) { if (err) throw err; // delete the temporary file, so that the explicitly set temporary // upload dir does not get filled with unwanted files fs.unlink(tmp_path, function() { if (err) throw err; // res.send('File uploaded to: ' + target_path + ' - ' + // req.files.files[0].size + ' bytes'+req.files.files.length); // queryurl = 'SELECT * FROM ' +tble + ' WHERE ' + id; queryurl = 'SELECT * FROM ' + tble + ' WHERE image=' + '"' + req.files.files[0].name + '"' + ' AND branch=' + '"' + id + '"'; connection.query(queryurl, function(err, result, fields) { console.log(JSON.stringify(result) + "result.image"); if (result.length == 0) { console.log("in if !result"); connection.query('INSERT INTO ' + tble + '(' + 'branch' + ',' + 'image' + ')' + 'VALUES' + '(' + '"' + id + '"' + ',' + '"' + req.files.files[0].name + '"' + ")", function(err, result, fields) { if (err) throw err; else { res.send('File uploaded to: ' + target_path + ' - ' + req.files.files[0].size + ' bytes' + req.files.files.length); } }); } else { console.log("in else !result"); res.send("duplicate"); } }); }); }); }); ``` Following is the error that I got from console. ``` TypeError: Object #<Object> has no method 'existsSync' at /var/www/jts-web/WebContent/app.js:95:20 at callbacks (/var/www/web/WebContent/node_modules/express/lib/router/index.js:165:11) at param (/var/www/web/WebContent/node_modules/express/lib/router/index.js:139:11) at param (/var/www/web/WebContent/node_modules/express/lib/router/index.js:136:11) at pass (/var/www/web/WebContent/node_modules/express/lib/router/index.js:146:5) at Router._dispatch (/var/www/web/WebContent/node_modules/express/lib/router/index.js:173:5) at Object.router [as handle] (/var/www/web/WebContent/node_modules/express/lib/router/index.js:33:10) at next (/var/www/web/WebContent/node_modules/express/node_modules/connect/lib/proto.js:190:15) at Object.methodOverride [as handle] (/var/www/web/WebContent/node_modules/express/node_modules/connect/lib/middleware/methodOverride.js:37:5) at next (/var/www/web/WebContent/node_modules/express/node_modules/connect/lib/proto.js:190:15) ``` In one site somebody told it will overcome after upgrading node js. But this code was working fine. It is not good if I need to upgrade for each change.