Error message

• Warning: Cannot modify header information - headers already sent by (output started at /home/content/20/9333620/html/hosted/sigilinitiative.com/index.php:3) in _drupal_bootstrap_page_cache() (line 2709 of /home/content/20/9333620/html/hosted/sigilinitiative.com/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/20/9333620/html/hosted/sigilinitiative.com/index.php:3) in drupal_send_headers() (line 1505 of /home/content/20/9333620/html/hosted/sigilinitiative.com/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/20/9333620/html/hosted/sigilinitiative.com/index.php:3) in drupal_send_headers() (line 1505 of /home/content/20/9333620/html/hosted/sigilinitiative.com/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/20/9333620/html/hosted/sigilinitiative.com/index.php:3) in drupal_send_headers() (line 1505 of /home/content/20/9333620/html/hosted/sigilinitiative.com/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/20/9333620/html/hosted/sigilinitiative.com/index.php:3) in drupal_send_headers() (line 1505 of /home/content/20/9333620/html/hosted/sigilinitiative.com/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/20/9333620/html/hosted/sigilinitiative.com/index.php:3) in drupal_send_headers() (line 1505 of /home/content/20/9333620/html/hosted/sigilinitiative.com/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/content/20/9333620/html/hosted/sigilinitiative.com/index.php:3) in drupal_send_headers() (line 1505 of /home/content/20/9333620/html/hosted/sigilinitiative.com/includes/bootstrap.inc).