HTTP 500 error by adding cart to back-end

[beaudenheijer]

In the newer version of prestashop i encountered a weird bug when you add the cart tot the back-end. the debug mode screenshot is below. and the code is below the screenshot.

require 'config/config.inc.php';
require 'init.php';

session_start();

try
{
        $id = isset($_SESSION['Cart_ID']) ? (int)$_SESSION['Cart_ID'] : null;

        $cart = new Cart($id, null);

        $cart->save(); // problem is just in this line

        $_SESSION['Cart_ID'] = $cart->id;

        if($_SERVER['REQUEST_METHOD'] === "POST")
        {
            if(isset($_POST['add_to_cart'], $_POST['id_product']) || !empty($_POST['id_product']))
            {
                $cart->updateQty(1, $_POST['id_product']);
                $cart->update();
                header("Location: index.php");
            }
        }
 }
 catch (PrestaShopException $e)
 {
 	echo $e;
 }

 

Edited October 6, 2019 by beaudenheijer (see edit history)

[beaudenheijer]

Note: I will reply between 09:00 - 12:00 amsterdam time!

edit ( forgot to mention ) : this will continue when i reinstall prestashop

Edited October 6, 2019 by beaudenheijer (see edit history)