Element click is not work

the paginate is a link( ).

i will scrap web page like "http://www.webscraper.io/test-sites/e-commerce/static/computers/laptops". And that page only have "next" link.

step A: walk every item
step B:click "next" link, and go back step A, until can't found next link.

i configure the element click, but it isn't working. I don't how to configure.

BTW: sorry , i can't attachment my json file, because include some website url.