app.post('/login, async function(req, res, next) {
        try {
         //Here I'm authenticating this users if
         //users exists and its pasword is correct.
         const userObj = await User.login(req.body);
          //If user verified we'll create a session
          //for this user by stroing it's information
          req.session.user = { email: userObj.email, name: userObj.name };
          res.redirect('/list');
        }catch(e) {
          next(e);
        }
  });