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`='9b770da7b470c2998f8789eccc35e1d3',`time`=1711652558,`ip`=X'22ccb194',`location`='/member.php?action=profile&uid=22371',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0