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`='39d55b2e3e52be5754887e8a471a96f4',`time`=1711627234,`ip`=X'03ee4fa9',`location`='/showthread.php?tid=6187',`useragent`='claudebot',`location1`=2,`location2`=6187,`nopermission`=0