Severity: Notice
Message: Undefined index: HTTP_REFERER
Filename: download_file/pi.download_file.php
Line Number: 77
Severity: Warning
Message: Cannot modify header information - headers already sent by (output started at /var/www/1/91879/www/ee_system/codeigniter/system/core/Exceptions.php:170)
Filename: download_file/pi.download_file.php
Line Number: 78