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`='894c94833456eef834847452d44e0c05',`time`=1711671779,`ip`=X'03d7b7c2',`location`='/showthread.php?tid=6699',`useragent`='claudebot',`location1`=5,`location2`=6699,`nopermission`=0