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`='f8051706ce0600d5c8e85ed99ed2a9fa',`time`=1711714736,`ip`=X'12e87141',`location`='/search.php?action=finduser&uid=870',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0