Page not found (error 404)

The page http://iwannabethatgirl.altervista.org/category/event/?doing_wp_cron=1571598097.7945680618286132812500&paged=3 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