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 * FROM forum_devicetype WHERE pid=

PHP Debug

No.FileLineCode
1forum.php67require(%s)
2source/module/forum/forum_viewthread.php1026include(%s)
3data/template/9_diy_forum_viewthread.tpl.php1hookscriptoutput(%s)
4source/function/function_core.php1211hookscript(%s, %s, %s, Array)
5source/function/function_core.php1170call_user_func(Array, Array)
6plugin_mocuz_app_postfrom_forum->viewthread_postbottom_output(Array)
7source/plugin/mocuz_app_postfrom/postfrom_pc.class.php19discuz_database::query(%s)
8source/class/discuz/discuz_database.php137db_driver_mysql->query(%s, false, false)
9source/class/db/db_driver_mysql.php152db_driver_mysql->halt(%s, %d, %s)
10source/class/db/db_driver_mysql.php223break()
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