Error message

• Notice: Undefined variable: home_link in include() (line 16 of profiles/backoffice/themes/customers/hk/templates/page.tpl.php).
• Warning: session_set_cookie_params(): Cannot change session cookie parameters when session is active in drupal_session_start() (line 300 of includes/session.inc).
• Notice: session_start(): A session had already been started - ignoring in drupal_session_start() (line 304 of includes/session.inc).