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`='fc1dea0d5004eebbd51b23da9de84489',`time`=1711643890,`ip`=X'36addd84',`location`='/showthread.php?tid=1096',`useragent`='claudebot',`location1`=2,`location2`=1096,`nopermission`=0