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`='9890da1a05ae5a4b2c6d824f21a53c08',`time`=1711641950,`ip`=X'36d27ee8',`location`='/member.php?action=profile&uid=27235',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0