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" encoding="&#x2713;" uri="" uuid="16014DA8-D2AA-11F1-9A13-4A2F2C684F3D" key="login">
    <field id="uuid-16018372-D2AA-11F1-9A13-4A2F2C684F3D" value="" extra="" name="username" widget="text" display="Username" attrs="" key="username"/>
    <field attrs="" name="password" key="password" extra="" id="uuid-1601CA3A-D2AA-11F1-9A13-4A2F2C684F3D" widget="password" display="Password"/>
    <field extra="" name="submit" id="uuid-1602118E-D2AA-11F1-9A13-4A2F2C684F3D" value="" widget="submit" display="Login" attrs="" key="submit"/>
  </form>
</response>