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`='e46cb66e60a94f8a2de09de6ac2c4539',`time`=1711691145,`ip`=X'3457c870',`location`='/showthread.php?tid=311&pid=2176',`useragent`='claudebot',`location1`=8,`location2`=311,`nopermission`=0