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`='236396b9fb6bede48709377409edfe51',`time`=1711677825,`ip`=X'36a3dd85',`location`='/newreply.php?tid=272&replyto=1698',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0