Discuz! Database Error

(1064) 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 '2,37,38,39,41,42,47,43,44,45,46) AND attachment > 0 order by heats desc' at line 1
SELECT * FROM forum_thread WHERE displayorder = 0 AND fid in (,2,37,38,39,41,42,47,43,44,45,46) AND attachment > 0 order by heats desc

PHP Debug

No.FileLineCode
1plugin.php47include(%s)
2source/plugin/cack_bestposts/cack_bestposts.inc.php65discuz_database::fetch_all(%s)
3source/class/discuz/discuz_database.php103discuz_database::query(%s, Array, false, false)
4source/class/discuz/discuz_database.php139db_driver_mysqli->query(%s, false, false)
5source/class/db/db_driver_mysqli.php148db_driver_mysqli->halt(%s, %d, %s)
6source/class/db/db_driver_mysqli.php223break()
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