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`='af2cce6cc8050c9d0a365e71a6b4cb50',`time`=1711624747,`ip`=X'2cc8276e',`location`='/showthread.php?tid=555',`useragent`='claudebot',`location1`=6,`location2`=555,`nopermission`=0