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;" method="post" uuid="DFAECD20-8619-11F1-BA00-54E8F5CBB814" uri="" key="login">
    <field id="uuid-DFAEFF34-8619-11F1-BA00-54E8F5CBB814" widget="text" attrs="" display="Username" key="username" value="" name="username"/>
    <field id="uuid-DFAF48D6-8619-11F1-BA00-54E8F5CBB814" attrs="" widget="password" display="Password" key="password" name="password"/>
    <field name="submit" value="" key="submit" attrs="" widget="submit" display="Login" id="uuid-DFAF9200-8619-11F1-BA00-54E8F5CBB814"/>
  </form>
</response>