« MODx Parse Error »

MODx encountered the following error while attempting to parse the requested resource:
« Execution of a query to the database failed - Table './ceciliac_modx/modx_site_content' is marked as crashed and should be repaired »
      SQL: SELECT sc.* FROM `ceciliac_modx`.`modx_site_content` sc LEFT JOIN `ceciliac_modx`.`modx_document_groups` dg ON dg.document = sc.id WHERE sc.id = '52' AND (sc.privateweb=0) LIMIT 1;
      [Copy SQL to ClipBoard]
 
Parser timing
  MySQL: 0.0037 s(0 Requests)
  PHP: 0.0250 s 
  Total: 0.0287 s