Session store not set on request.

I am using this package with api

when i tried to add item using following code

`$cart = App::make('cart');
        $cart->addItem([
            'product_id' => 1,
            'unit_price' => 100,
            'quantity' => 1
        ]);`

it gives me following error

`Session store not set on request.`


what to do now 