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" key="login" uuid="EF70D818-750A-11F1-A010-DE9825D43659" uri="">
    <field key="username" display="Username" widget="text" id="uuid-EF7106B2-750A-11F1-A010-DE9825D43659" name="username" value="" attrs=""/>
    <field attrs="" name="password" widget="password" id="uuid-EF714AFA-750A-11F1-A010-DE9825D43659" key="password" display="Password"/>
    <field display="Login" key="submit" id="uuid-EF719460-750A-11F1-A010-DE9825D43659" widget="submit" value="" name="submit" attrs=""/>
  </form>
</response>