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`='98cefd3fd7b1d0eaff30166658888657',`time`=1711677678,`ip`=X'2cdc835d',`location`='/showthread.php?tid=1848&pid=7078',`useragent`='claudebot',`location1`=2,`location2`=1848,`nopermission`=0