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`='1892d0e3c4e87bf6792c10087e49e7c4',`time`=1711651857,`ip`=X'03ee3e77',`location`='/memberlist.php?perpage=20&username_match=begins&username=W&sort=regdate&order=ascending',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0