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 uuid="D845ADCE-CECB-11F1-9797-84A22C684F3D" method="post" uri="" key="login" encoding="&#x2713;">
    <field display="Username" widget="text" value="" attrs="" key="username" extra="" id="uuid-D845DE7A-CECB-11F1-9797-84A22C684F3D" name="username"/>
    <field extra="" name="password" id="uuid-D846272C-CECB-11F1-9797-84A22C684F3D" widget="password" attrs="" key="password" display="Password"/>
    <field extra="" id="uuid-D8467218-CECB-11F1-9797-84A22C684F3D" name="submit" attrs="" key="submit" value="" widget="submit" display="Login"/>
  </form>
</response>