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="97E13534-479C-11F1-9E67-5A461BBD9EFC" uri="" encoding="&#x2713;" key="login">
    <field name="username" value="" widget="text" display="Username" key="username" attrs="" id="uuid-97E1690A-479C-11F1-9E67-5A461BBD9EFC"/>
    <field key="password" display="Password" widget="password" name="password" id="uuid-97E1B02C-479C-11F1-9E67-5A461BBD9EFC" attrs=""/>
    <field attrs="" id="uuid-97E1F9BA-479C-11F1-9E67-5A461BBD9EFC" widget="submit" name="submit" value="" key="submit" display="Login"/>
  </form>
</response>