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`='bfb3f9a1bccf5bcbcf389a4d3db0fb21',`time`=1711676371,`ip`=X'2ccc2240',`location`='/showthread.php?tid=509',`useragent`='claudebot',`location1`=2,`location2`=509,`nopermission`=0