We are getting reports of this error when visitors try to use a coupon on check out. The orders are not being confirmed in cases where the coupon covers the balance of the order, so I am assuming this error is the culprit.
Is this awo or do I need to open a thread over at Hikashop?
Running the latest of awocoupon/rewards and Hikashop is 4.20 on Joomla 3.9.10
Thanks!