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`='91dee97e51a318137e2f567ff301205c',`time`=1711720411,`ip`=X'0358b964',`location`='/showthread.php?tid=401&pid=46354',`useragent`='claudebot',`location1`=2,`location2`=401,`nopermission`=0