AskPHPHosting on "Warning: Invalid argument supplied for foreach() in /home/site/public_html/xx/wp"

Go to edit Theme Functons functions.php (your theme/functions.php) and remove something like that

function my_remove_menu_pages() {
	remove_menu_page('link-manager.php');
	remove_menu_page('edit.php?post_type=portfolio');
}
add_action( 'admin_init', 'my_remove_menu_pages' );

Its mean remove menu page not work with remove sub menu in admin area.