MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
126 - Index for table './default_mivn1/irmn_sessions.MYI' is corrupt; try to repair it
Query:
REPLACE INTO irmn_sessions SET `uid`=0,`sid`='0f436dbea39053bd9cb3531fea9a3ba1',`time`=1711669410,`ip`=X'2cc918ab',`location`='/showthread.php?tid=27551%20',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0