[isf-wifidog] Client gets blank page when trying to login to RADIUS based network

[Steven Kurylo]

On 11-01-18 04:11 AM, Mark Dammer wrote:
> [Tue Jan 18 11:52:31 2011] [error] [client 172.16.15.126] PHP Notice:
> Use of undefined constant en_US - assumed 'en_US' in
> /var/www/wifidog-auth/wifidog/config.php on line 160

You need to fix config.php first.  Find the line  with "DEFAULT_LANG", 
which is probably line 160.  Mine looks like:

define('DEFAULT_LANG', en_US);