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 key="login" uuid="A068666E-4FCB-11F1-86A0-8C072D3515A0" uri="" method="post" encoding="&#x2713;">
    <field widget="text" attrs="" name="username" key="username" display="Username" id="uuid-A0689CC4-4FCB-11F1-86A0-8C072D3515A0" value=""/>
    <field display="Password" attrs="" name="password" widget="password" key="password" id="uuid-A068DFCC-4FCB-11F1-86A0-8C072D3515A0"/>
    <field attrs="" name="submit" widget="submit" key="submit" display="Login" id="uuid-A0692A04-4FCB-11F1-86A0-8C072D3515A0" value=""/>
  </form>
</response>