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`='87a28710135047a8d78202191e33e301',`time`=1711699970,`ip`=X'2cde5a19',`location`='/showthread.php?tid=300',`useragent`='claudebot',`location1`=8,`location2`=300,`nopermission`=0