Error message

• Warning: Cannot modify header information - headers already sent by (output started at /home/content/00/10999200/html/index.php:2) in drupal_send_headers() (line 1216 of /home/content/00/10999200/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/00/10999200/html/index.php:2) in drupal_send_headers() (line 1216 of /home/content/00/10999200/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/00/10999200/html/index.php:2) in drupal_send_headers() (line 1216 of /home/content/00/10999200/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/00/10999200/html/index.php:2) in drupal_send_headers() (line 1216 of /home/content/00/10999200/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/00/10999200/html/index.php:2) in drupal_send_headers() (line 1216 of /home/content/00/10999200/html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/00/10999200/html/index.php:2) in drupal_send_headers() (line 1216 of /home/content/00/10999200/html/includes/bootstrap.inc).