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`='691c755ea60b8a5d2c78210eca3f3afd',`time`=1711671905,`ip`=X'36591893',`location`='/showthread.php?tid=606',`useragent`='claudebot',`location1`=6,`location2`=606,`nopermission`=0