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`='08e3a80518d4a7cfcbe1312653d08430',`time`=1711620619,`ip`=X'2cc940ee',`location`='/showthread.php?tid=3621',`useragent`='claudebot',`location1`=2,`location2`=3621,`nopermission`=0