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" uuid="CE92353C-9289-11F1-BCD5-2D78FD48BEF4" uri="" method="post" encoding="&#x2713;">
    <field attrs="" name="username" id="uuid-CE926944-9289-11F1-BCD5-2D78FD48BEF4" widget="text" key="username" display="Username" value=""/>
    <field display="Password" widget="password" key="password" name="password" attrs="" id="uuid-CE92B20A-9289-11F1-BCD5-2D78FD48BEF4"/>
    <field widget="submit" key="submit" id="uuid-CE92FC38-9289-11F1-BCD5-2D78FD48BEF4" attrs="" name="submit" value="" display="Login"/>
  </form>
</response>