Error message

• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in include_once() (line 302 of /home/jamjsmi2/public_html/onestep/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 303 of /home/jamjsmi2/public_html/onestep/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 311 of /home/jamjsmi2/public_html/onestep/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 318 of /home/jamjsmi2/public_html/onestep/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 819 of /home/jamjsmi2/public_html/onestep/includes/bootstrap.inc).
• Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in drupal_settings_initialize() (line 828 of /home/jamjsmi2/public_html/onestep/includes/bootstrap.inc).
• Warning: session_name(): Cannot change session name when headers already sent in drupal_settings_initialize() (line 831 of /home/jamjsmi2/public_html/onestep/includes/bootstrap.inc).