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`='44ea54c3bc614370dd1970edbe6f2e85',`time`=1711693810,`ip`=X'03509ba3',`location`='/showthread.php?tid=1561&pid=6425',`useragent`='claudebot',`location1`=2,`location2`=1561,`nopermission`=0