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`='d845ac5c9cc952b4511e814b44f786b3',`time`=1711717959,`ip`=X'2cdd5772',`location`='/showthread.php?tid=17',`useragent`='claudebot',`location1`=16,`location2`=17,`nopermission`=0