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`='e7d2c3c8727216e04a4c3d6262733c41',`time`=1711640995,`ip`=X'23ab16dc',`location`='/showthread.php?tid=7483&pid=97593',`useragent`='claudebot',`location1`=2,`location2`=7483,`nopermission`=0