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`='0783a3ca9b54efca12f54f322bbcada9',`time`=1711642317,`ip`=X'36c540cf',`location`='/showthread.php?tid=65&pid=273',`useragent`='claudebot',`location1`=2,`location2`=65,`nopermission`=0