can't change page for product display result

-- url of the page with the problem -- : 121.42.47.213/index.php
-- HikaShop version -- : 2.6.4
-- Joomla version -- : 3.6.2
-- PHP version -- : 5.5.9
-- Browser(s) name and version -- : chrome 53.0.2785.143

Hi thank you for you help in advance.

I recently changed my website template, but found that I can't change page when display my product, when I click number '2' or others, browser has no response but URL in address bar changed into something like

http://121.42.47.213/index.php#" onclick="var f = document.forms[