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`='aa3553367012aa09f22f9f57e9d11bb4',`time`=1711670682,`ip`=X'03ef779f',`location`='/showthread.php?tid=2987',`useragent`='claudebot',`location1`=2,`location2`=2987,`nopermission`=0