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`='628af079341a9b3aed23c6865e17b2c2',`time`=1711647044,`ip`=X'22cc03c3',`location`='/showthread.php?tid=6615',`useragent`='claudebot',`location1`=2,`location2`=6615,`nopermission`=0