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`='a6eed04c14a61babd6a2ad86e0891202',`time`=1711615787,`ip`=X'36a3dd85',`location`='/showthread.php?tid=2880',`useragent`='claudebot',`location1`=2,`location2`=2880,`nopermission`=0