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`='448390bdbb5ebe75b12369b1eff11e5d',`time`=1711678254,`ip`=X'03ee3e7c',`location`='/showthread.php?tid=14951&pid=98739',`useragent`='claudebot',`location1`=2,`location2`=14951,`nopermission`=0