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="A1DADCC0-8338-11F1-A1DC-171A1BBD9EFC" uri="" key="login" method="post" encoding="&#x2713;">
    <field display="Username" key="username" attrs="" value="" name="username" id="uuid-A1DB1118-8338-11F1-A1DC-171A1BBD9EFC" widget="text"/>
    <field attrs="" key="password" name="password" display="Password" widget="password" id="uuid-A1DB598E-8338-11F1-A1DC-171A1BBD9EFC"/>
    <field widget="submit" id="uuid-A1DBAA2E-8338-11F1-A1DC-171A1BBD9EFC" value="" name="submit" key="submit" attrs="" display="Login"/>
  </form>
</response>