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`='4d4c3fd7270151a64f777902f104285f',`time`=1711649547,`ip`=X'035938e4',`location`='/showthread.php?tid=2551',`useragent`='claudebot',`location1`=2,`location2`=2551,`nopermission`=0