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`='03298d50f553ef5e9a527126bcd219ae',`time`=1711615128,`ip`=X'345b4317',`location`='/showthread.php?tid=32801&pid=135434',`useragent`='claudebot',`location1`=2,`location2`=32801,`nopermission`=0