Error when adding a product to an order

-- HikaShop version -- : 4.4.4
-- Joomla version -- : 3.10.3
-- PHP version -- : 8.0.12
-- Browser(s) name and version -- : Chrome 94.0
-- Error-message(debug-mod must be tuned on) -- : Unsupported operand types: string * string

When we add manually a product to a product list we get an error after clicking on Save.
This happens with the two options (NEW or SELECT)

This error started after upgrading my PHP over the weekend.

It's an error related to PHP 8
I just downgraded the site to PHP 7.4 and this function is working fine.

Please let me know your findings, as I would like to upgrade to the latest stable PHP.

Hi,

Thank you for your feedback. I was able to reproduce the problem and added a patch on our end for it.
Download again the HikaShop install package on our website and install it on yours and it will add the patch for that problem.