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`='518db0457751240952a5c29a38531d0f',`time`=1711624846,`ip`=X'36e123e0',`location`='/showthread.php?mode=threaded&tid=329&pid=944',`useragent`='claudebot',`location1`=8,`location2`=329,`nopermission`=0