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`='c0f72b48d9c1d77f5089bd0d7705552a',`time`=1711702100,`ip`=X'ae818cce',`location`='/showthread.php?tid=21',`useragent`='claudebot',`location1`=7,`location2`=21,`nopermission`=0