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`='bdc41fab1a60c8b8354e05b5e3828191',`time`=1711663916,`ip`=X'345ad38d',`location`='/showthread.php?tid=6710',`useragent`='claudebot',`location1`=5,`location2`=6710,`nopermission`=0