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`='72f414478e3b109bbd13b927a450b688',`time`=1711701695,`ip`=X'22c91397',`location`='/showthread.php?tid=24500&pid=70573',`useragent`='claudebot',`location1`=2,`location2`=24500,`nopermission`=0