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`='86fa1b1988f9dd8e12f928d4d4997bfe',`time`=1711632333,`ip`=X'22ee8f46',`location`='/newreply.php?tid=634&replyto=6117',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0