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`='fe91e8b180ac693ce4c48d9b510e3c56',`time`=1711646562,`ip`=X'365711b1',`location`='/showthread.php?mode=linear&tid=256&pid=2121',`useragent`='claudebot',`location1`=8,`location2`=256,`nopermission`=0