Displaying information about the weight of the goods opencart 2x?

Question

opencart

Displaying information about the weight of the goods opencart 2x
Warning: A non-numeric value encountered in /public_html/system/storage/modification/admin/controller/sale/order.php on line 2038

'weight'   => $this->weight->format(($product_info['weight'] + $option_weight) * $product['quantity'], $product_info['weight_class_id'], $this->language->get('decimal_point'), $this->language->get('thousand_point'))

How to fix?

Answer 1

Try to "hard" cast to the desired type (float)$option_weight

'weight'   => $this->weight->format(($product_info['weight'] + (float)$option_weight) * $product['quantity'], $product_info['weight_class_id'], $this->language->get('decimal_point'), $this->language->get('thousand_point'))

Answer 2

Thanks to everyone, the problem was that the version of PHP 5.6 was earlier, I changed the version to PHP 7.x on the server, because of this there were a lot of problems, and I returned it back to PHP 5.6 and it all worked)))