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`='28a3de671b59ff8d315933dda9a3c8c6',`time`=1711722741,`ip`=X'2cc8ae9d',`location`='/showthread.php?tid=398',`useragent`='claudebot',`location1`=9,`location2`=398,`nopermission`=0