A bug of blog plugin of Elgg 1.6.1?

I logged out the Elgg. When I browsered http://localhost/elgg/html/pg/blog, the program stopped at /mod/blog/index.php $area2 .= list_user_objects($page_owner->getGUID(),'blog',10,false); and the page is blank.  I think it should be a redirection there at least. I'm not sure if I am correct.