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`='f7f112ac45947a8d74338950f6f6da10',`time`=1711639241,`ip`=X'2cd37565',`location`='/showthread.php?tid=70&pid=203',`useragent`='claudebot',`location1`=2,`location2`=70,`nopermission`=0