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`='de0b6d373237a97324a4295ea7f0ff07',`time`=1711622458,`ip`=X'035083a4',`location`='/showthread.php?tid=1546&pid=6389',`useragent`='claudebot',`location1`=2,`location2`=1546,`nopermission`=0