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`='d79c861cce6e3b326cbf8ca3ea35c247',`time`=1711718912,`ip`=X'2399aabd',`location`='/showthread.php?tid=28079',`useragent`='claudebot',`location1`=2,`location2`=28079,`nopermission`=0