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 uri="" uuid="7298A624-739C-11F0-96E3-7AE4B03FE236" method="post" key="login" encoding="&#x2713;">
    <field widget="text" key="username" id="uuid-7298DE50-739C-11F0-96E3-7AE4B03FE236" attrs="" display="Username" name="username" value=""/>
    <field name="password" display="Password" key="password" widget="password" attrs="" id="uuid-7299269E-739C-11F0-96E3-7AE4B03FE236"/>
    <field display="Login" name="submit" value="" widget="submit" key="submit" attrs="" id="uuid-72997518-739C-11F0-96E3-7AE4B03FE236"/>
  </form>
</response>