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`='35480e95d61cbff51ab253145b2d3b33',`time`=1711713815,`ip`=X'369e8aa1',`location`='/showthread.php?tid=66&action=lastpost',`useragent`='claudebot',`location1`=7,`location2`=66,`nopermission`=0