Error message

• Warning: Cannot modify header information - headers already sent by (output started at /home/factspro/public_html/dn80.com/includes/bootstrap.inc:1627) in drupal_send_headers() (line 1486 of /home/factspro/public_html/dn80.com/includes/bootstrap.inc).
• Error: Class 'FeedsHTTPCache' not found in feeds_cron() (line 82 of /home/factspro/public_html/dn80.com/sites/all/modules/feeds/feeds.module).