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`='ff508b4beda3a8dc053d2a98a60d0e3b',`time`=1711643113,`ip`=X'035938e4',`location`='/showthread.php?tid=299',`useragent`='claudebot',`location1`=8,`location2`=299,`nopermission`=0