Shopping cart can be None.

bt5/erp5_commerce/SkinTemplateItem/portal_skins/erp5_commerce/SaleOrder_getShoppingCartItemList.xml

@@ -60,7 +60,10 @@
     name probably.\n
   - make sure this script is not called more than once per page\n
 """\n
-shopping_cart_order_line_list = context.SaleOrder_getShoppingCart().contentValues(portal_type="Sale Order Line")\n
+shopping_cart = context.SaleOrder_getShoppingCart()\n
+if shopping_cart is None:\n
+  return []\n
+shopping_cart_order_line_list = shopping_cart.contentValues(portal_type="Sale Order Line")\n
 if include_shipping:\n
   return shopping_cart_order_line_list\n
 else:\n

bt5/erp5_commerce/bt/revision

-319
\ No newline at end of file
+320
\ No newline at end of file