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`='5467e25f6a0e063ac678ef879b048180',`time`=1711722539,`ip`=X'36e118f9',`location`='/member.php?action=profile&uid=17484',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0