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`='906d6411d9b44dee1c16c367c6444949',`time`=1711721150,`ip`=X'2ccd02bc',`location`='/showthread.php?tid=41237',`useragent`='claudebot',`location1`=2,`location2`=41237,`nopermission`=0