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`='03851aafd77e59a5304e823c749981a5',`time`=1711712356,`ip`=X'03ed1852',`location`='/showthread.php?tid=634&action=newpost',`useragent`='claudebot',`location1`=20,`location2`=634,`nopermission`=0