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`='26aea1eab63665b12d49ad78ebea30ba',`time`=1711661722,`ip`=X'36d25314',`location`='/showthread.php?tid=5034',`useragent`='claudebot',`location1`=2,`location2`=5034,`nopermission`=0