Error message

• Warning: Cannot modify header information - headers already sent by (output started at /home/content/18/9146418/html/index.php:3) in drupal_send_headers() (line 1220 of /home/content/18/9146418/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/18/9146418/html/index.php:3) in drupal_send_headers() (line 1220 of /home/content/18/9146418/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/18/9146418/html/index.php:3) in drupal_send_headers() (line 1220 of /home/content/18/9146418/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/18/9146418/html/index.php:3) in drupal_send_headers() (line 1220 of /home/content/18/9146418/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/18/9146418/html/index.php:3) in drupal_send_headers() (line 1216 of /home/content/18/9146418/html/includes/bootstrap.inc).
• PDOException: SQLSTATE[HY000]: General error: 1033 Incorrect information in file: './gheetrobase/image_dimensions.frm': SELECT * FROM {image_dimensions} id WHERE id.fid IN (:fids_0); Array ( [:fids_0] => 51 ) in file_entity_file_load() (line 225 of /home/content/18/9146418/html/sites/all/modules/media/file_entity/file_entity.module).