error on listing preview page

Hi guys!

I´m getting this error below the footer on the listing preview page:

Fatal error: Uncaught TypeError: Argument 1 passed to WPSEO_Admin_Bar_Menu::get_post_focus_keyword() must be an instance of WP_Post, instance of stdClass given, called in /home/momadvi5/public_html/wp-content/plugins/wordpress-seo/inc/class-wpseo-admin-bar-menu.php on line 204 and defined in /home/momadvi5/public_html/wp-content/plugins/wordpress-seo/inc/class-wpseo-admin-bar-menu.php:474 Stack trace: #0 /home/momadvi5/public_html/wp-content/plugins/wordpress-seo/inc/class-wpseo-admin-bar-menu.php(204): WPSEO_Admin_Bar_Menu->get_post_focus_keyword(Object(stdClass)) #1 /home/momadvi5/public_html/wp-content/plugins/wordpress-seo/inc/class-wpseo-admin-bar-menu.php(61): WPSEO_Admin_Bar_Menu->add_keyword_research_submenu(Object(WP_Admin_Bar)) #2 /home/momadvi5/public_html/wp-includes/class-wp-hook.php(286): WPSEO_Admin_Bar_Menu->add_menu(Object(WP_Admin_Bar)) #3 /home/momadvi5/public_html/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #4 /home/momadvi5/public_html/wp-includes/plugin.php(515): WP_Hook-> in /home/momadvi5/public_html/wp-content/plugins/wordpress-seo/inc/class-wpseo-admin-bar-menu.php on line 474

Help please

Thanks!!!