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`='36314c0a2cd97a279d6a34bd470446d1',`time`=1711679856,`ip`=X'12d1d1f6',`location`='/showthread.php?tid=237&pid=2643',`useragent`='claudebot',`location1`=9,`location2`=237,`nopermission`=0