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 method="post" encoding="&#x2713;" uuid="5179012C-C6AD-11F1-B07B-40A3898B97BA" uri="" key="login">
    <field display="Username" id="uuid-51793890-C6AD-11F1-B07B-40A3898B97BA" attrs="" key="username" widget="text" value="" name="username"/>
    <field name="password" widget="password" key="password" attrs="" id="uuid-51797F1C-C6AD-11F1-B07B-40A3898B97BA" display="Password"/>
    <field display="Login" attrs="" key="submit" id="uuid-5179CA9E-C6AD-11F1-B07B-40A3898B97BA" value="" widget="submit" name="submit"/>
  </form>
</response>