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`='c838ade3f190cb83c26dae55db857f0c',`time`=1711641809,`ip`=X'36a3dd85',`location`='/showthread.php?tid=3416',`useragent`='claudebot',`location1`=2,`location2`=3416,`nopermission`=0