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`='79fd5f27df97b5598e2427421b4bf334',`time`=1711711629,`ip`=X'22cd02cf',`location`='/printthread.php?tid=3289',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0