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`='26c178e05cb66560d38c0d599a10f2c6',`time`=1711650413,`ip`=X'22c92580',`location`='/newreply.php?tid=3906&replyto=11728',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0