hikashop shows "Invalid address: (Reply-To):" Error when i pay card

-- HikaShop version -- : 5.0.2
-- Joomla version -- : 4.3.2
-- PHP version -- : 8.1.9
-- Browser(s) name and version -- : edge
-- Error-message(debug-mod must be tuned on) -- : Invalid address: (Reply-To):

what am i do now?

Hi,

This indicates that an email address is incorrect in an email being sent by HikaShop.
It seems to happen when HikaShop sends the "payment notification" email for an order linked to a user entry with an invalid email address.
So I would first recommend you to check the details of the order and check what email address is used by the user there.