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`='9ee0b0533b120b3909347db0bf4fccc2',`time`=1711640946,`ip`=X'03516125',`location`='/misc.php?action=whoposted&tid=407',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0