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`='27e1e65526924e06f6da643148b90de8',`time`=1711707744,`ip`=X'3417c991',`location`='/memberlist.php?sort=threadnum&order=descending&perpage=20&page=5',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0