SEO правка

Есть сайт 
там есть ошибка 

URLs contained in either, or both, the rel="next" and rel="prev" attributes of the page, are not found as a hyperlink in an HTML anchor element on the page itself. Paginated pages should be linked to with regular links to allow users to click and navigate to the next page in the series. They also allow Google to crawl from page to page, and PageRank to flow between pages in the series.

нужно объяснить как это работает и пофиксить