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`='bf90f98b4522384be018bec79e3ec854',`time`=1711618599,`ip`=X'03eec351',`location`='/newreply.php?tid=305&replyto=1862',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0