이게 도대체 무슨 에러 일까요..?

혹시나 싶어 admin-bar.php 이것을 찾아서…. 324째줄을 보니,
별다른게 없는것 같아요..ㅠ.ㅠ

/**
* Add the “My Sites/[Site Name]” menu and all submenus.
*
* @since 3.1.0
*
* @param WP_Admin_Bar $wp_admin_bar
*/
function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
// Don’t show for logged out users or single site mode. <———324째줄.
if ( ! is_user_logged_in() || ! is_multisite() )
return;

// Show only when the user has at least one site, or they’re a super admin.
if ( count( $wp_admin_bar->user->blogs ) < 1 && ! is_super_admin() )
return;