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`='9dd0c33a3068d6c43e76a4f952ef1357',`time`=1711721259,`ip`=X'36ea7c46',`location`='/newreply.php?tid=463&replyto=4464',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0