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`='e6c3bfb27938b093ef290d2730cce906',`time`=1711702347,`ip`=X'1716ec5a',`location`='/newreply.php?tid=244&replyto=1468',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0