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`='21b05cf4d970fb8a9a452b2f508e4c22',`time`=1711696661,`ip`=X'23ad7d70',`location`='/showthread.php?tid=299&pid=732',`useragent`='claudebot',`location1`=8,`location2`=299,`nopermission`=0