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" uri="" encoding="&#x2713;" key="login" uuid="47579E3A-8CBE-11F0-BFA3-26FF2F49FC8C">
    <field id="uuid-4757CDA6-8CBE-11F0-BFA3-26FF2F49FC8C" display="Username" attrs="" widget="text" name="username" value="" key="username"/>
    <field display="Password" id="uuid-47581856-8CBE-11F0-BFA3-26FF2F49FC8C" widget="password" name="password" attrs="" key="password"/>
    <field value="" key="submit" id="uuid-47586180-8CBE-11F0-BFA3-26FF2F49FC8C" display="Login" attrs="" name="submit" widget="submit"/>
  </form>
</response>