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="DDB88152-97A7-11F0-9274-4CF52F49FC8C" encoding="&#x2713;" method="post" uri="" key="login">
    <field attrs="" name="username" widget="text" value="" display="Username" key="username" id="uuid-DDB8B050-97A7-11F0-9274-4CF52F49FC8C"/>
    <field display="Password" id="uuid-DDB8F6DC-97A7-11F0-9274-4CF52F49FC8C" key="password" widget="password" name="password" attrs=""/>
    <field attrs="" name="submit" widget="submit" value="" id="uuid-DDB941AA-97A7-11F0-9274-4CF52F49FC8C" key="submit" display="Login"/>
  </form>
</response>