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`='a662764d9e7a398860ed3435d45eaafe',`time`=1711711518,`ip`=X'03e86cab',`location`='/showthread.php?tid=6714',`useragent`='claudebot',`location1`=5,`location2`=6714,`nopermission`=0