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`='fcbcab5a8fc1153cd593ba91f67e258e',`time`=1711698688,`ip`=X'2cde5277',`location`='/member.php?action=profile&Uid=18603',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0