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`='a9969e1fe7df742a30abe143c36ac617',`time`=1711638683,`ip`=X'2cc08442',`location`='/showthread.php?tid=207',`useragent`='claudebot',`location1`=2,`location2`=207,`nopermission`=0