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 groupid from common_member where uid=

PHP Debug

No.FileLineCode
1portal.php27runhooks()
2source/function/function_core.php1130hookscript(%s, %s, %s, Array, %s, %s)
3source/function/function_core.php1177call_user_func(Array, Array)
4plugin_seo_portal->view_article_subtitle(Array)
5source/plugin/seo/seo.class.php1471discuz_database::result_first(%s)
6source/class/discuz/discuz_database.php118discuz_database::query(%s, Array, false, false)
7source/class/discuz/discuz_database.php137db_driver_mysql->query(%s, false, false)
8source/class/db/db_driver_mysql.php152db_driver_mysql->halt(%s, %d, %s)
9source/class/db/db_driver_mysql.php223break()
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