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`='0f50a5c00f013e581426492d3298cd62',`time`=1711666668,`ip`=X'03ec3789',`location`='/showthread.php?tid=546&action=lastpost',`useragent`='claudebot',`location1`=17,`location2`=546,`nopermission`=0