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`='c46ca0a27af1b3a615fff119067d5536',`time`=1711707019,`ip`=X'23afc8c7',`location`='/showthread.php?tid=3614',`useragent`='claudebot',`location1`=2,`location2`=3614,`nopermission`=0