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 encoding="&#x2713;" uri="" uuid="585C3BF4-2850-11F1-9B61-F5501ABF1312" method="post" key="login">
    <field attrs="" widget="text" key="username" value="" id="uuid-585C6AFC-2850-11F1-9B61-F5501ABF1312" name="username" display="Username"/>
    <field display="Password" name="password" id="uuid-585CD988-2850-11F1-9B61-F5501ABF1312" widget="password" key="password" attrs=""/>
    <field attrs="" key="submit" widget="submit" value="" id="uuid-585D232A-2850-11F1-9B61-F5501ABF1312" name="submit" display="Login"/>
  </form>
</response>