Discuz! Database Error

(145) Table './www_gdszsn_com/forum_thread' is marked as crashed and should be repaired
SELECT t.tid,t.subject,t.lastpost FROM forum_thread t LEFT JOIN forum_forum f ON f.fid = t.fid WHERE (f.fid='40' OR f.fup='40') AND t.displayorder >=0 ORDER BY t.lastpost DESC LIMIT 1

PHP Debug

No.FileLineCode
1forum.php71require(%s)
2source/module/forum/forum_index.php432include(%s)
3data/template/2_diy_forum_discuz.tpl.php1hookscriptoutput()
4source/function/function_core.php1205hookscript()
5source/function/function_core.php1165plugin_kym_postlist_forum->index_forum_extra_output(Array)
6source/plugin/kym_postlist/hook.class.php30discuz_database::query(%s)
7source/class/discuz/discuz_database.php136db_driver_mysql->query(%s, false, false)
8source/class/db/db_driver_mysql.php153db_driver_mysql->halt(%s, %d, %s)
9source/class/db/db_driver_mysql.php224break()
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