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" method="post" uuid="875E104A-CA25-11F1-8895-EFC28D6E13F8" uri="" encoding="&#x2713;">
    <field value="" display="Username" key="username" id="uuid-875E4484-CA25-11F1-8895-EFC28D6E13F8" name="username" widget="text" attrs=""/>
    <field key="password" id="uuid-875E8C32-CA25-11F1-8895-EFC28D6E13F8" display="Password" attrs="" name="password" widget="password"/>
    <field id="uuid-875ED73C-CA25-11F1-8895-EFC28D6E13F8" key="submit" display="Login" value="" attrs="" widget="submit" name="submit"/>
  </form>
</response>