MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
144 - Table './bandariklan_forum/mybb_posts' is marked as crashed and last (automatic?) repair failed
Query:
SELECT p.pid, p.uid, p.fid, p.visible, p.message, t.tid, t.subject, t.visible AS thread_visible FROM mybb_posts p LEFT JOIN mybb_threads t ON (t.tid=p.tid) WHERE p.pid IN (3) AND p.fid NOT IN (40,29,30,31,3) AND p.visible='1' AND t.visible='1'