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`='d6f6d3a23841de39036125236b26d084',`time`=1711628364,`ip`=X'36a33e2a',`location`='/showthread.php?tid=461&action=newpost',`useragent`='claudebot',`location1`=19,`location2`=461,`nopermission`=0