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`='092d545f0232a8efec494ba4d26a2d87',`time`=1711645611,`ip`=X'2cdef913',`location`='/newreply.php?tid=70&replyto=217',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0