Error message

• Warning: ini_set() [function.ini-set]: A session is active. You cannot change the session module's ini settings at this time in drupal_environment_initialize() (line 684 of /home/katskr5/public_html/includes/bootstrap.inc).
• Notice: A session had already been started - ignoring session_start() in drupal_session_start() (line 287 of /home/katskr5/public_html/includes/session.inc).