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`='854403bb14baee83661bad5f50969354',`time`=1711610417,`ip`=X'3693c1dd',`location`='/showthread.php?tid=300&pid=916',`useragent`='claudebot',`location1`=8,`location2`=300,`nopermission`=0