Pagination works, but only the first page can be scraped

Hi Team,
Describe the problem:
the sitemap i created can pagination, but only the 1st page's data can be scraped, any one can help?

Url: http://www.erlangcha.com/

Sitemap:
{"_id":"test","startUrl":["http://www.erlangcha.com/?search_name=&topType=10&secType=85&start_date=2019-10-10&end_date=2019-10-10"],"selectors":[{"id":"line","type":"SelectorElement","parentSelectors":["_root","pagination"],"selector":"tbody tr","multiple":true,"delay":0},{"id":"photo","type":"SelectorImage","parentSelectors":["line"],"selector":"img","multiple":false,"delay":0},{"id":"pagination","type":"SelectorElementClick","parentSelectors":["_root","pagination"],"selector":"a.layui-laypage-next","multiple":true,"delay":"500","clickElementSelector":".layui-laypage-next i","clickType":"clickMore","discardInitialElements":"do-not-discard","clickElementUniquenessType":"uniqueHTMLText"}]}

thanks.