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`='e84fe0314711c2956af984f0fb09cba5',`time`=1711654696,`ip`=X'03ebe324',`location`='/showthread.php?tid=296&pid=1821',`useragent`='claudebot',`location1`=8,`location2`=296,`nopermission`=0