XSLT Error

Empty filename at /home/ubuntu/perl5/perlbrew/perls/perl-5.18.0/lib/site_perl/5.18.0/Chameleon5/Template/XSLT.pm line 575.

Response XML

<?xml version="1.0"?>
<response>
  <form method="post" uuid="7272B4E6-7797-11F1-82DA-39511BBD9EFC" encoding="&#x2713;" key="login" uri="">
    <field widget="text" display="Username" value="" id="uuid-7272E376-7797-11F1-82DA-39511BBD9EFC" attrs="" key="username" name="username"/>
    <field name="password" key="password" id="uuid-72732AAC-7797-11F1-82DA-39511BBD9EFC" attrs="" widget="password" display="Password"/>
    <field name="submit" key="submit" attrs="" id="uuid-72737552-7797-11F1-82DA-39511BBD9EFC" display="Login" value="" widget="submit"/>
  </form>
</response>