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`='df68fbaa277082e403742d21a9bfd84b',`time`=1711631397,`ip`=X'03ed4166',`location`='/newreply.php?tid=308&replyto=741',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0