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`='115cc3acd95e4315f9f1911aafcada70',`time`=1711707561,`ip`=X'22e5975d',`location`='/showthread.php?tid=9225',`useragent`='claudebot',`location1`=2,`location2`=9225,`nopermission`=0