Discuz! Database Error

(1064) You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1
select stars from common_usergroup where groupid=

PHP Debug

No.FileLineCode
1forum.php67require(%s)
2source/module/forum/forum_viewthread.php792usergroupIconId(%s)
3source/function/function_forum.php604discuz_database::fetch_first(%s)
4source/class/discuz/discuz_database.php92discuz_database::query(%s, Array, false, false)
5source/class/discuz/discuz_database.php137db_driver_mysqli->query(%s, false, false)
6source/class/db/db_driver_mysqli.php147db_driver_mysqli->halt(%s, %d, %s)
7source/class/db/db_driver_mysqli.php222break()
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