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`='297e01d7e06ac532728e73d837374fda',`time`=1711712429,`ip`=X'2cdf2589',`location`='/showthread.php?tid=5012]I2BCM7V10WQK[/url]',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0