Bitrix: why doesn't pagination work on the search results page?

Question

1C-Bitrix

Help advice. Online store on Bitrix, version 18.1.8 When a product search page is displayed, the pagination link to the second page looks like site.ru/catalog/?PAGEN_2=2 and leads to the root of the product catalog. I looked at how the link should look on sites with the same template: site.ru/catalog/?q=search_query&PAGEN_2=2
Moreover, if you manually enter the search query in the url, then the second and following pages of the search open correctly. Tell me what and where you need to change so that pagination links are formed correctly when searching in the catalog.

Answer 1

See component template main.pagenavigation
*is there a parameter on the first page q?