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`='d9ed0f310207e974f0e579dd831ac8e5',`time`=1711700118,`ip`=X'36f216f7',`location`='/showthread.php?tid=635&action=lastpost',`useragent`='claudebot',`location1`=5,`location2`=635,`nopermission`=0