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`='411e53451950d1422276294adc1cd36d',`time`=1711672920,`ip`=X'36a6aac3',`location`='/showthread.php?tid=623',`useragent`='claudebot',`location1`=2,`location2`=623,`nopermission`=0