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`='8a635f96a174d84e147f0207ab10b244',`time`=1711688471,`ip`=X'03ee40c9',`location`='/showthread.php?tid=261&action=newpost',`useragent`='claudebot',`location1`=8,`location2`=261,`nopermission`=0