MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
145 - Table './balkania_forum/mybb_sessions' is marked as crashed and should be repaired
Query:
REPLACE INTO mybb_sessions SET `uid`=0,`sid`='02417424836418829583e4013b771d84',`time`=1711713546,`ip`=X'2cdf2464',`location`='/newreply.php?tid=12',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0