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`='7def3d57f3a13dd9ca5de84830aab4da',`time`=1711695377,`ip`=X'3692614f',`location`='/showthread.php?tid=27508',`useragent`='claudebot',`location1`=2,`location2`=27508,`nopermission`=0