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`='e3eddec20bf0454214e4e9bed4d11fe3',`time`=1711667161,`ip`=X'365711b1',`location`='/showthread.php?tid=2149',`useragent`='claudebot',`location1`=2,`location2`=2149,`nopermission`=0