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`='34e1a3b1879167b6ed28624ce12389e1',`time`=1711706761,`ip`=X'2cc8201f',`location`='/showthread.php?tid=50',`useragent`='claudebot',`location1`=7,`location2`=50,`nopermission`=0