warning in products admin page after HikaShop Starter 4.2.1 upgrade

-- HikaShop version -- : 4.2.1
-- Joomla version -- : 3.7.4
-- Browser(s) name and version -- : firefox
-- Error-message(debug-mod must be tuned on) -- : Warning: Invalid argument supplied for foreach() in /web/htdocs/mysite/home/administrator/components/com_hikashop/classes/field.php on line 653

Hi.
Hope someone can help me to solve the following warning appearing on top of products (only in products view) admin page after hikashop starter version upgrade:

Warning: Invalid argument supplied for foreach() in /web/htdocs/mysite/home/administrator/components/com_hikashop/classes/field.php on line 653

There are no other warning or error messages both in front-end and back-end.

Hi,

Thanks for your feedback.
Change the line:
if(empty($rows)) return;
to:
if(empty($rows) || empty($fields)) return;
in the file /administrator/components/com_hikashop/classes/field.php and it will remove the warning.
We'll add the patch on our end too.

Thank you so much