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`='4afc7769d62b3bbf35e1008937cd7c49',`time`=1711724820,`ip`=X'12ce4c2d',`location`='/newreply.php?tid=314&replyto=1904',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0