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`='a3a0140da6aaef9f0da8b988ee4a760c',`time`=1711719122,`ip`=X'03ed5745',`location`='/showthread.php?tid=3637',`useragent`='claudebot',`location1`=2,`location2`=3637,`nopermission`=0