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`='9926348586a64cd192c94a49f23730c2',`time`=1711725900,`ip`=X'035948dd',`location`='/forumdisplay.php?fid=2&page=366',`useragent`='claudebot',`location1`=2,`location2`=0,`nopermission`=0