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`='5958b5806afb620499b8828b80d15a1f',`time`=1711661992,`ip`=X'2cd54b4e',`location`='/showthread.php?tid=7655&pid=98143',`useragent`='claudebot',`location1`=2,`location2`=7655,`nopermission`=0