Error

I get an error when I put the buddypress Default link in the menu.
with link : http://prntscr.com/1z91ip
With out link : http://prntscr.com/1z91zq

Fatal error: Call to undefined function groups_get_total_group_count() in /home/wingman/public_html/wp-content/plugins/bp-direct-menus/inc/frontend-noajax.inc.php on line 73

http://ww.wp.xz.cn/plugins/bp-direct-menus/