Error: req.flash() requires sessions

I get this error when I'm trying to use req.flash in my project, I am using express 4.0.0 where all my node modules installed in Windows PC

res.render('login.ejs', { message: req.flash('loginMessage') });

Kindly do the needful to fix this.

Thanks In Advance :)

Start with the reported res.render call and req.flash('loginMessage') usage, then inspect how Express 4 sessions are configured in the affected project. Reproduce the error and identify the missing session-related setup; done means the flash message renders without the reported error.

Written by the indexing model from the issue text.