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`='87b0de2b40840a10e66609e54df4f02c',`time`=1711690425,`ip`=X'03edbd74',`location`='/member.php?action=profile&uid=1029',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0