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 '' at line 1
select count(*) as num from forum_thread where fid in(1,29,30,55,187,154,35,3,20,75,110,23,174,46,4,96,67,160,140,63,97,26,31,161,18,171,57,14,16,186,59) and displayorder>=0 and attachment=2 and recommend_add>=

PHP Debug

No.FileLineCode
1plugin.php47include(%s)
2source/plugin/waterfall/waterfall.inc.php17waterFallMain->getMulPage()
3source/plugin/waterfall/main.class.php105discuz_database::fetch_first()
4source/class/discuz/discuz_database.php94discuz_database::query()
5source/class/discuz/discuz_database.php142db_driver_mysqli->query()
6source/class/db/db_driver_mysqli.php148db_driver_mysqli->halt()
7source/class/db/db_driver_mysqli.php223break()
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