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="D57C99E0-81F5-11F1-993A-1B072D3515A0" key="login">
    <field attrs="" key="username" display="Username" value="" id="uuid-D57CD266-81F5-11F1-993A-1B072D3515A0" widget="text" name="username"/>
    <field key="password" display="Password" attrs="" widget="password" id="uuid-D57D1B22-81F5-11F1-993A-1B072D3515A0" name="password"/>
    <field name="submit" key="submit" display="Login" attrs="" widget="submit" value="" id="uuid-D57D656E-81F5-11F1-993A-1B072D3515A0"/>
  </form>
</response>