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" encoding="&#x2713;" key="login" uri="" uuid="6435B5D2-CBA6-11F1-8346-2BD70B50D6CE">
    <field widget="text" value="" attrs="" display="Username" key="username" id="uuid-6435EDB8-CBA6-11F1-8346-2BD70B50D6CE" name="username"/>
    <field key="password" display="Password" attrs="" widget="password" name="password" id="uuid-64363318-CBA6-11F1-8346-2BD70B50D6CE"/>
    <field id="uuid-64367C4C-CBA6-11F1-8346-2BD70B50D6CE" name="submit" widget="submit" value="" attrs="" display="Login" key="submit"/>
  </form>
</response>