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="7EB7CFD8-32B5-11F1-BCF8-C4D7A9425785" uri="" encoding="&#x2713;" key="login" method="post">
    <field name="username" key="username" id="uuid-7EB80430-32B5-11F1-BCF8-C4D7A9425785" widget="text" attrs="" value="" display="Username"/>
    <field display="Password" attrs="" key="password" name="password" id="uuid-7EB84C92-32B5-11F1-BCF8-C4D7A9425785" widget="password"/>
    <field attrs="" value="" display="Login" widget="submit" id="uuid-7EB894D6-32B5-11F1-BCF8-C4D7A9425785" name="submit" key="submit"/>
  </form>
</response>