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`='5361c452c7cfb9d7d2ed2738961e4ca2',`time`=1711710050,`ip`=X'035320e2',`location`='/misc.php?action=whoposted&tid=259',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0