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`='167953910ee90962215898e9359b3a88',`time`=1711674658,`ip`=X'03ed2e78',`location`='/showthread.php?tid=7602&pid=97996',`useragent`='claudebot',`location1`=2,`location2`=7602,`nopermission`=0