0-Error: 0 After step 3

-- url of the page with the problem -- : shop.minxmarketing.co.za/index.php/compo...ep/step-3?Itemid=101
-- HikaShop version -- : latest
-- Joomla version -- : latest
-- PHP version -- : 5.6
-- Error-message(debug-mod must be tuned on) -- : 0-Error

Morning Support I hope you guys are great .

I get the following error when i wan to check out.