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`='d96f344ac952ef98d8076f0b7529cfd0',`time`=1711709499,`ip`=X'03ee40c9',`location`='/showthread.php?tid=276&pid=1721',`useragent`='claudebot',`location1`=8,`location2`=276,`nopermission`=0