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`='4c3d5d821a369bf1136cae6b300b5a7e',`time`=1711712662,`ip`=X'345bb15b',`location`='/showthread.php?tid=591',`useragent`='claudebot',`location1`=29,`location2`=591,`nopermission`=0