When I try to return a product on an order, with product back in stock checked and creation of a voucher checked, I always have this error :
Une erreur inattendue s'est produite. [PrestaShop\PrestaShop\Core\Domain\Order\Exception\CancelProductFromOrderException code 0]
Stock is correctly updated, but I don't have voucher or credit slip generated. The product is not removed from the order and the total amount is not modified.
ps: the prestashop was recently updated from 220.127.116.11 to 18.104.22.168