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`='f7b1f54c4441466aed4769a7a6b4f491',`time`=1711703883,`ip`=X'035f277f',`location`='/showthread.php?tid=1188&pid=5551',`useragent`='claudebot',`location1`=2,`location2`=1188,`nopermission`=0