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`='f87a36fc1499b989dce4b864f5a11693',`time`=1711616285,`ip`=X'36ea8893',`location`='/newreply.php?tid=324&replyto=756',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0