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`='918aaf96e9b9b8d39aeab2da09a9c4cf',`time`=1711724750,`ip`=X'03509ba3',`location`='/showthread.php?tid=3468',`useragent`='claudebot',`location1`=2,`location2`=3468,`nopermission`=0