Can't load page

I’m not being able to load this page, although I can easily load all other posts that load the same custom post type template. When turning debugging on, I only get:

Notice: wpdb::escape is deprecated since version 3.6! Use wpdb::prepare() or esc_sql() instead. in /nfs/c01/h04/mnt/38315/domains/joao.pt/html/wp-includes/functions.php on line 2905

What else can I do to understand what’s going on here? It doesn’t even timeout, it just serves a blank page—tested in all major browsers.