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`='8e05ac647fd9d89d4477d0970aa0615e',`time`=1711644875,`ip`=X'03ebf9db',`location`='/showthread.php?tid=666&pid=6149',`useragent`='claudebot',`location1`=5,`location2`=666,`nopermission`=0