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" uuid="0133282E-968D-11F0-A387-70F154FD9ABD" uri="" encoding="&#x2713;" key="login">
    <field display="Username" name="username" attrs="" widget="text" value="" id="uuid-013359D4-968D-11F0-A387-70F154FD9ABD" key="username"/>
    <field widget="password" id="uuid-0133A272-968D-11F0-A387-70F154FD9ABD" key="password" display="Password" name="password" attrs=""/>
    <field name="submit" display="Login" attrs="" value="" widget="submit" key="submit" id="uuid-0133ED7C-968D-11F0-A387-70F154FD9ABD"/>
  </form>
</response>