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`='cd6e9de5ac6954bb07b39b06483ea9fa',`time`=1711703451,`ip`=X'345a83c8',`location`='/forumdisplay.php?fid=2&page=562',`useragent`='claudebot',`location1`=2,`location2`=0,`nopermission`=0