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`='9b865a556f33d37db5dc02fed63a2e14',`time`=1711712918,`ip`=X'03ef0d01',`location`='/showthread.php?tid=566&action=lastpost',`useragent`='claudebot',`location1`=19,`location2`=566,`nopermission`=0