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`='8d03cca5186c3e64fbd3d21a66b2b506',`time`=1711701447,`ip`=X'03ef5359',`location`='/member.php?action=profile&uid=477',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0