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 encoding="&#x2713;" key="login" uri="" uuid="BF21A1F8-CFE9-11F1-9F89-A9E9B3F3B997" method="post">
    <field name="username" extra="" widget="text" value="" attrs="" id="uuid-BF21D06A-CFE9-11F1-9F89-A9E9B3F3B997" key="username" display="Username"/>
    <field display="Password" attrs="" key="password" id="uuid-BF221A8E-CFE9-11F1-9F89-A9E9B3F3B997" extra="" name="password" widget="password"/>
    <field display="Login" id="uuid-BF226494-CFE9-11F1-9F89-A9E9B3F3B997" attrs="" key="submit" value="" widget="submit" extra="" name="submit"/>
  </form>
</response>