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`='1a02ba91b0380812f8864f9190a532b3',`time`=1711697595,`ip`=X'2cd31851',`location`='/newreply.php?tid=259&replyto=1633',`useragent`='claudebot',`location1`=0,`location2`=0,`nopermission`=0