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`='08ac35bc4761ef6c0d411f6f238850d0',`time`=1711658918,`ip`=X'3437d6ec',`location`='/showthread.php?tid=260&pid=1638',`useragent`='claudebot',`location1`=8,`location2`=260,`nopermission`=0