WebMaster .

Hello , I have this Error (500 Server error) it comes from settings in some core files from Prestashop: And also i this Error (500 Server error) displayed when the customer select payment method (PayFort) when start checkout. [PrestaShopException] Invalid product vars at line 106 in file classes/[login to view URL] 101. if (is_array($product) && isset($product['id_product'])) { 102. $product = new Product($product['id_product'], false, $id_lang, $id_shop); 103. } elseif ((int)$product) { 104. $product = new Product((int)$product, false, $id_lang, $id_shop); 105. } else { 106. throw new PrestaShopException('Invalid product vars'); 107. } 108. } 109. 110. // Set available keywords 111. $params = array();