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`='4d62b234b0aa428ab5759253c8efc26d',`time`=1711668455,`ip`=X'03ee3e7c',`location`='/showthread.php?mode=threaded&tid=259&pid=1641',`useragent`='claudebot',`location1`=8,`location2`=259,`nopermission`=0