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`='ccf1892a773bc03464d887b10d551597',`time`=1711637674,`ip`=X'3437d6ec',`location`='/showthread.php?tid=2939',`useragent`='claudebot',`location1`=2,`location2`=2939,`nopermission`=0