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`='bf977fa13facd5a26f8266e8f1af2777',`time`=1711699414,`ip`=X'2cd35b17',`location`='/showthread.php?tid=263&pid=1653',`useragent`='claudebot',`location1`=8,`location2`=263,`nopermission`=0