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`='66898157db013a714ee549444fc06558',`time`=1711714291,`ip`=X'0351a5d2',`location`='/misc.php?action=syndication',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0