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`='f4ed6315f61f0c46029c95c5cfe727ee',`time`=1711648441,`ip`=X'345ad38d',`location`='/showthread.php?tid=624',`useragent`='claudebot',`location1`=17,`location2`=624,`nopermission`=0