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 uri="" encoding="&#x2713;" key="login" uuid="A3F94FA0-9347-11F0-A7A7-3B0E36923908" method="post">
    <field widget="text" attrs="" display="Username" key="username" id="uuid-A3F981AA-9347-11F0-A7A7-3B0E36923908" name="username" value=""/>
    <field key="password" id="uuid-A3F9C98A-9347-11F0-A7A7-3B0E36923908" name="password" display="Password" widget="password" attrs=""/>
    <field name="submit" key="submit" id="uuid-A3FA14A8-9347-11F0-A7A7-3B0E36923908" value="" widget="submit" attrs="" display="Login"/>
  </form>
</response>