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`='afdef2b01258287e287159aea1d496d0',`time`=1711711458,`ip`=X'369d238c',`location`='/showthread.php?tid=520&action=newpost',`useragent`='claudebot',`location1`=5,`location2`=520,`nopermission`=0