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`='a518f84f20905ea6d54807cd2c6c0351',`time`=1711663734,`ip`=X'369fba92',`location`='/showthread.php?tid=15&pid=4595',`useragent`='claudebot',`location1`=8,`location2`=15,`nopermission`=0