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`='92d5006c2e09489e52d635d751deff04',`time`=1711707055,`ip`=X'22c91cb5',`location`='/showthread.php?tid=3571',`useragent`='claudebot',`location1`=2,`location2`=3571,`nopermission`=0