DB Error in wp_users::append_meta: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '21,131,132) /* WP_Users::append_meta */' at line 1

SELECT user_id, meta_key, meta_value FROM wp_usermeta WHERE user_id IN (22,18,17,47,1,20,,21,131,132) /* WP_Users::append_meta */