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`='501e4feee4b7501ccd9ec9487dbb3c35',`time`=1711621665,`ip`=X'23afec2c',`location`='/showthread.php?tid=271&page=2',`useragent`='claudebot',`location1`=8,`location2`=271,`nopermission`=0