Page not found (error 404)

The page http://gngsrl.altervista.org/catalogo/products-page/page/3/?doing_wp_cron=1571184696.0655400753021240234375 was not found on this server.

This can be due to:

Pay attetion to UPPER and LOWER cases
http://site.altervista.org/Page.html is different from http://site.altervista.org/page.html