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`='ae6e979ba96e08e265b9329478989b53',`time`=1711720787,`ip`=X'3417cbfe',`location`='/newreply.php?tid=330&replyto=2194',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0