网站内容页经常打不开出这个问题Discuz! Database Error

Discuz! Database Error(145) Table './ultrax/forum_post' is marked as crashed and should be repaired SELECT * FROM forum_post WHERE tid=244902 AND position>=1 AND position<11 ORDER BY position

PHP Debug

No.	File	Line	Code
1	forum.php	58	require(%s)
2	source/module/forum/forum_viewthread.php	501	table_forum_post->fetch_all_by_tid_range_position(%s, %s, %d, %d, %s, %d)
3	source/class/table/table_forum_post.php	78	discuz_database::fetch_all(%s, Array, %s)
4	source/class/discuz/discuz_database.php	100	discuz_database::query(%s, Array, false, false)
5	source/class/discuz/discuz_database.php	136	db_driver_mysql->query(%s, false, false)
6	source/class/db/db_driver_mysql.php	151	db_driver_mysql->halt(%s, %d, %s)
7	source/class/db/db_driver_mysql.php	218	break()

你之前都做过什么和安装过什么插件

说什么文件出错，要修复。