How to fix “express is not a function”?

Question

I installed express but I have this error

var express= require ('express');
var app = express();
var ejs =require('ejs');
var port= 3000
 app.get('/',function(req,res,next){
    res.render('/form.ejs');
    });
    app.listen(3000);
 module.exports= app;

Answer 1

The version of express you are using is most probably outdated.

Remove express": "^<version>" from package.json and use the following command to install the latest version of express.

npm install --save express

Or you could also set express": "latest" in the package.json file and run the command nom install to install the latest version.