error msg on membership

getting this error all over the place suddenly:

Warning: Missing argument 2 for wpdb::prepare(), called in /home/content/98/10038498/html/osu/wp-content/plugins/membership/membershipincludes/classes/membershipadmin.php on line 6283 and defined in /home/content/98/10038498/html/osu/wp-includes/wp-db.php on line 990

I updates the genesis theme, and this started happening, so I downgraded, and it’s till there. Also updated membership plugin.