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`='3c5bc46bf2a763813a27207238f3af71',`time`=1711727402,`ip`=X'03ec8afd',`location`='/showthread.php?tid=1278',`useragent`='claudebot',`location1`=2,`location2`=1278,`nopermission`=0