when I use smartfilters it doesn’t show me all the products

Hello,
When I use smart filters, all the products do not load.
What happens is that I scroll down and when I want to go to the next page, the site keeps loading and does not open the new page (it gives an error when opening the page).
On other pages I usually use a button: “load more” and the products will appear below. How can I add “Load More” button or
How can I solve this problem?

Thank you

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