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`='7adaa27ef20c60d4d9ba2a47fee5d1d6',`time`=1711714543,`ip`=X'12ce4ca0',`location`='/showthread.php?tid=27494',`useragent`='claudebot',`location1`=2,`location2`=27494,`nopermission`=0