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`='2c4bec1240de82107df62171f97a4a5f',`time`=1711717681,`ip`=X'03d6b845',`location`='/newreply.php?tid=308&replyto=2714',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0