After instaled the MB Favorite Posts extension, I have been warned with this notice on my WP dashboard:
Notice: wpdb::prepare was called incorrectly. The query argument of wpdb::prepare() must have a placeholder. Please see Debugging in WordPress for more information. (This message was added in version 3.9.0.) in /.../wp-includes/functions.php on line 5663
Notice: Undefined offset: 0 in /home/.../wp-includes/wp-db.php on line 1323
After refreshing the page, the notice disappeared. Is there any problem?