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`='0284881233642b013b7231e30c4d6ada',`time`=1711671664,`ip`=X'2cd76e8e',`location`='/memberlist.php?perpage=20&sort=referrals&order=ascending',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0