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 uri="" encoding="&#x2713;" uuid="431F55CA-9C71-11F0-9F76-76A7455C7DD5" method="post" key="login">
    <field display="Username" id="uuid-431F8AC2-9C71-11F0-9F76-76A7455C7DD5" value="" attrs="" key="username" name="username" widget="text"/>
    <field widget="password" key="password" name="password" attrs="" id="uuid-431FD54A-9C71-11F0-9F76-76A7455C7DD5" display="Password"/>
    <field key="submit" attrs="" name="submit" widget="submit" id="uuid-43201EC4-9C71-11F0-9F76-76A7455C7DD5" value="" display="Login"/>
  </form>
</response>