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`='98c872457eeda257332edf24ad68dd4c',`time`=1711702877,`ip`=X'035f0236',`location`='/newreply.php?tid=242&replyto=1426',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0