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`='f1fafc3bb472620958b469398a098339',`time`=1711707415,`ip`=X'2cc8f0cd',`location`='/showthread.php?tid=22410&pid=64603',`useragent`='claudebot',`location1`=2,`location2`=22410,`nopermission`=0