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`='19eab64d4237f3219f3f23cad5165aca',`time`=1711653286,`ip`=X'0353512a',`location`='/showthread.php?tid=2020',`useragent`='claudebot',`location1`=2,`location2`=2020,`nopermission`=0