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`='8b5cd29fd9073028136100f3a66a37f0',`time`=1711708559,`ip`=X'2cde711c',`location`='/ratethread.php?tid=3565&rating=2&my_post_key=0defca876e1cfa781c8edc536a60eac5',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0