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`='9da518c063b9ff109f3fb82ef81b71f6',`time`=1711618733,`ip`=X'369fba92',`location`='/showthread.php?tid=2877',`useragent`='claudebot',`location1`=2,`location2`=2877,`nopermission`=0