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`='a21d069eaf98d0e3e0cf056b21903693',`time`=1711702148,`ip`=X'0355a777',`location`='/showthread.php?tid=94',`useragent`='claudebot',`location1`=2,`location2`=94,`nopermission`=0