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`='7eb8b92ff57f602789e9b414d0f6b4f1',`time`=1711709471,`ip`=X'03ed208f',`location`='/showthread.php?tid=569&action=lastpost',`useragent`='claudebot',`location1`=17,`location2`=569,`nopermission`=0