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`='15855d9e97ac762a8e39b362715be186',`time`=1711666828,`ip`=X'03ec3789',`location`='/misc.php?action=whoposted&tid=285',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0