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`='4b0b033c927daa52171b387077612261',`time`=1711671122,`ip`=X'23ade9b0',`location`='/showthread.php?tid=3819',`useragent`='claudebot',`location1`=2,`location2`=3819,`nopermission`=0