Discuz! Database Error

(144) Table './root/security_failedlog' is marked as crashed and last (automatic?) repair failed
SELECT count(*) FROM security_failedlog

PHP Debug

No.FileLineCode
1index.php126require(%s)
2portal.php32require_once(%s)
3source/module/portal/portal_index.php32include_once(%s)
4data/template/17_diy_portal_index.tpl.php1hookscriptoutput(%s)
5source/function/function_core.php1202hookscript(%s, %s)
6source/function/function_core.php1165plugin_security->global_footer(Array)
7source/plugin/security/security.class.php88discuz_table->count()
8source/class/discuz/discuz_table.php50discuz_database::result_first(%s)
9source/class/discuz/discuz_database.php117discuz_database::query(%s, Array, false, false)
10source/class/discuz/discuz_database.php136db_driver_mysql->query(%s, false, false)
11source/class/db/db_driver_mysql.php153db_driver_mysql->halt(%s, %d, %s)
12source/class/db/db_driver_mysql.php224break()
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