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="CAF5C358-905E-11F1-A4CE-28817BD1CDC2" key="login" method="post" encoding="&#x2713;" uri="">
    <field id="uuid-CAF5FD46-905E-11F1-A4CE-28817BD1CDC2" display="Username" key="username" name="username" widget="text" value="" attrs=""/>
    <field id="uuid-CAF64B02-905E-11F1-A4CE-28817BD1CDC2" display="Password" name="password" widget="password" attrs="" key="password"/>
    <field key="submit" name="submit" attrs="" value="" widget="submit" id="uuid-CAF69788-905E-11F1-A4CE-28817BD1CDC2" display="Login"/>
  </form>
</response>