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`='3d3f683cd65e20b8d13b03acf2747058',`time`=1711665935,`ip`=X'345b0044',`location`='/newreply.php?tid=3852&replyto=4282',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0