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`='92d17ed4ed81b9fa494c4efdae754e18',`time`=1711703653,`ip`=X'2cc6b46c',`location`='/showthread.php?tid=6044',`useragent`='claudebot',`location1`=2,`location2`=6044,`nopermission`=0