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`='b2a43e0fd58ced3261915270c3491656',`time`=1711700846,`ip`=X'3417e7cf',`location`='/forumdisplay.php?fid=6&datecut=9999&prefix=0&sortby=subject&order=asc',`useragent`='claudebot',`location1`=6,`location2`=0,`nopermission`=0