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`='039e973b30651d6e87a57d2b6a59cb55',`time`=1711707200,`ip`=X'23a871f8',`location`='/member.php?action=profile&uid=10209',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0