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 it618_classname FROM it618_scoremall_class1 WHERE id=

PHP Debug

No.FileLineCode
1plugin.php47include(%s)
2source/plugin/it618_scoremall/scoremall_list.inc.php158discuz_database::result_first(%s)
3source/class/discuz/discuz_database.php117discuz_database::query(%s, Array, false, false)
4source/class/discuz/discuz_database.php135db_driver_mysqli_slave->query(%s, false, false)
5source/class/db/db_driver_mysqli_slave.php91db_driver_mysqli->query(%s, false, false)
6source/class/db/db_driver_mysqli.php148db_driver_mysqli->halt(%s, %d, %s)
7source/class/db/db_driver_mysqli.php223break()
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