pfSense

For the last several versions I've noticed this error using the web gui on an SG-5100. When trying to view Firewall Aliases the following appears in the browser:

Warning: require_once(alias.inc): failed to open stream: No such file or directory in /usr/local/www/firewall_aliases.php on line 39 Fatal error: require_once(): Failed opening required 'alias.inc' (include_path='.:/etc/inc:/usr/local/www:/usr/local/captiveportal:/usr/local/pkg:/usr/local/www/classes:/usr/local/www/classes/Form:/usr/local/share/pear:/usr/local/share/openssl_x509_crl/') in /usr/local/www/firewall_aliases.php on line 39 PHP ERROR: Type: 64, File: /usr/local/www/firewall_aliases.php, Line: 39, Message: require_once(): Failed opening required 'alias.inc' (include_path='.:/etc/inc:/usr/local/www:/usr/local/captiveportal:/usr/local/pkg:/usr/local/www/classes:/usr/local/www/classes/Form:/usr/local/share/pear:/usr/local/share/openssl_x509_crl/')