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;" key="login" uri="" uuid="334E309E-72B8-11F1-B55B-A30E1BBD9EFC">
    <field key="username" widget="text" value="" display="Username" name="username" attrs="" id="uuid-334E64CE-72B8-11F1-B55B-A30E1BBD9EFC"/>
    <field id="uuid-334EACB8-72B8-11F1-B55B-A30E1BBD9EFC" attrs="" display="Password" name="password" widget="password" key="password"/>
    <field name="submit" display="Login" value="" id="uuid-334EF614-72B8-11F1-B55B-A30E1BBD9EFC" attrs="" key="submit" widget="submit"/>
  </form>
</response>