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`='81fb911254969b5a3e64fe7621521c12',`time`=1711727871,`ip`=X'36a0f5f3',`location`='/showthread.php?tid=277&pid=1724',`useragent`='claudebot',`location1`=8,`location2`=277,`nopermission`=0