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`='6d513278c5a17ec177b8195d47f705d1',`time`=1711672566,`ip`=X'12e9dfbd',`location`='/calendar.php?',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0