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`='4841efea510bfc573d838776158d112c',`time`=1711632800,`ip`=X'365946a1',`location`='/newreply.php?tid=289&replyto=2695',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0