Discuz! Database Error

(1176) Key 'digest' doesn't exist in table 'forum_thread'
SELECT * FROM forum_thread FORCE INDEX (digest) WHERE `fid`='73' AND `displayorder` IN('0','1','2','3','4') AND `digest`>'0' ORDER BY displayorder DESC, lastpost DESC LIMIT 18

PHP Debug

No.FileLineCode
1forum.php67require(%s)
2source/module/forum/forum_forumdisplay.php640table_forum_thread->fetch_all_search(Array, %d, %d, %d, %s, %s, %s)
3source/class/table/table_forum_thread.php523discuz_database::fetch_all(%s)
4source/class/discuz/discuz_database.php101discuz_database::query(%s, Array, false, false)
5source/class/discuz/discuz_database.php137db_driver_mysqli->query(%s, false, false)
6source/class/db/db_driver_mysqli.php147db_driver_mysqli->halt(%s, %d, %s)
7source/class/db/db_driver_mysqli.php222break()
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