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 encoding="&#x2713;" uri="" uuid="DAA54916-2517-11F1-9B70-E7D3A9425785" key="login" method="post">
    <field key="username" widget="text" id="uuid-DAA57BDE-2517-11F1-9B70-E7D3A9425785" value="" attrs="" name="username" display="Username"/>
    <field widget="password" key="password" id="uuid-DAA5C0BC-2517-11F1-9B70-E7D3A9425785" display="Password" name="password" attrs=""/>
    <field attrs="" name="submit" display="Login" key="submit" widget="submit" id="uuid-DAA60C34-2517-11F1-9B70-E7D3A9425785" value=""/>
  </form>
</response>