Access denied

Error message

• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in drupal_environment_initialize() (line 682 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in drupal_environment_initialize() (line 683 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in drupal_environment_initialize() (line 684 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in drupal_environment_initialize() (line 687 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in drupal_environment_initialize() (line 689 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in include_once() (line 300 of /home/smartkb/public_html/sites/default/settings.php).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in include_once() (line 301 of /home/smartkb/public_html/sites/default/settings.php).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in include_once() (line 309 of /home/smartkb/public_html/sites/default/settings.php).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in include_once() (line 316 of /home/smartkb/public_html/sites/default/settings.php).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in drupal_settings_initialize() (line 776 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: session_name(): Cannot change session name when headers already sent in drupal_settings_initialize() (line 788 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: session_set_save_handler(): Cannot change save handler when headers already sent in drupal_session_initialize() (line 242 of /home/smartkb/public_html/includes/session.inc).
• Warning: session_id(): Cannot change session id when headers already sent in drupal_session_initialize() (line 266 of /home/smartkb/public_html/includes/session.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/smartkb/public_html/index.php:3) in drupal_send_headers() (line 1221 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/smartkb/public_html/index.php:3) in drupal_send_headers() (line 1221 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/smartkb/public_html/index.php:3) in drupal_send_headers() (line 1221 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/smartkb/public_html/index.php:3) in drupal_send_headers() (line 1221 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/smartkb/public_html/index.php:3) in drupal_send_headers() (line 1221 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/smartkb/public_html/index.php:3) in drupal_send_headers() (line 1221 of /home/smartkb/public_html/includes/bootstrap.inc).
• Warning: Cannot modify header information - headers already sent by (output started at /home/smartkb/public_html/index.php:3) in drupal_send_headers() (line 1217 of /home/smartkb/public_html/includes/bootstrap.inc).