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 key="login" uri="" encoding="&#x2713;" method="post" uuid="934B40DC-CE88-11F1-A8D3-0B54B4F3B997">
    <field widget="text" id="uuid-934B76E2-CE88-11F1-A8D3-0B54B4F3B997" key="username" attrs="" display="Username" value="" name="username" extra=""/>
    <field display="Password" attrs="" id="uuid-934BBF6C-CE88-11F1-A8D3-0B54B4F3B997" key="password" extra="" name="password" widget="password"/>
    <field extra="" name="submit" widget="submit" display="Login" attrs="" key="submit" id="uuid-934C0684-CE88-11F1-A8D3-0B54B4F3B997" value=""/>
  </form>
</response>