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`='d83d784fadf097714a9e5b6785da75f3',`time`=1711671802,`ip`=X'343737ef',`location`='/ratethread.php?tid=309&rating=5&my_post_key=6af831a19aa17a49575db2fd16b0736d',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0