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`='b4b7644dfe4adf6b4acfe4e53c27df0d',`time`=1711724174,`ip`=X'3417cbfe',`location`='/showthread.php?tid=41126',`useragent`='claudebot',`location1`=2,`location2`=41126,`nopermission`=0