TypeError: response.writeHead is not a function
at C:UsersKaaDesktopNodeShopserver.js:88:22

server.route({
    method: 'POST',
    path: '/login',
    config: {
      auth: {
        mode: 'try',
        strategy: 'session'
      },
      plugins: {
        'hapi-auth-cookie': {
          redirectTo: false
        }
      },
      handler: function(request, response) {

        if (request.auth.isAuthenticated) {
          console.info('Already!');
          return res.redirect('/');
        }
        var username = request.payload.username;
        dbCouch.get('user_' + request.payload.username).then(function(data) {
          var user = data;
          var pass = data.password;
          if(!user) {
            return console.error('Can`t find user!');
          }

          var password = request.payload.password;
          return Bcrypt.compare(password, pass, function(err, isValid) {

            response.writeHead(200, {'Content-Type': 'text/plain'});
            response.write('Text');
            response.end('ok');

          });
        })
        .catch((err) => {
          response(Boom.notFound('User is not found!')).code(400);
        });
      }
    }
  });

});