MyBB SQL Error

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
144 - Table './sql15202/mybb_posts' is marked as crashed and last (automatic?) repair failed
Query:
SELECT pid FROM mybb_posts WHERE uid='2494' AND fid NOT IN ('3','112','28','108','13','6','62','52','97','53','50','51','29','135','49','23','30','87','98','34','32','36','48','39','104','106','59','122','57','56','58','60','61','84','86','85','76','131','145','119','77','78','79','80','81','82','83','88','91','89','17','93','94','130','102','99','100','101','10','11','109','110','111','113','123','114','115','116','118','117','120','125','126','124','132','134','133','15','21','146','147') AND fid NOT IN (112,113,123,114,115,116,118,117,125,126,124,28,87,98,88,91,89,93,94,102,99,100,101,108,109,110,111,49,104,106,48,39,119,120,130) ORDER BY dateline DESC