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="" key="login" method="post" uuid="A1891A80-C6DF-11F1-B455-9A6B400CC38E" encoding="&#x2713;">
    <field attrs="" id="uuid-A1894DDE-C6DF-11F1-B455-9A6B400CC38E" value="" display="Username" name="username" widget="text" key="username"/>
    <field display="Password" attrs="" id="uuid-A18992C6-C6DF-11F1-B455-9A6B400CC38E" name="password" widget="password" key="password"/>
    <field key="submit" attrs="" display="Login" value="" id="uuid-A189E26C-C6DF-11F1-B455-9A6B400CC38E" name="submit" widget="submit"/>
  </form>
</response>