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`='771bfece75690736f4fb760c8f5cde11',`time`=1711712161,`ip`=X'3693009b',`location`='/ratethread.php?tid=563&rating=4&my_post_key=86d86be0d262555929f8dfcb2778144f',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0