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 method="post" uuid="A0541BD0-3F1A-11F1-BB53-FB371ABF1312" encoding="&#x2713;" uri="" key="login">
    <field name="username" id="uuid-A0545212-3F1A-11F1-BB53-FB371ABF1312" widget="text" display="Username" value="" key="username" attrs=""/>
    <field key="password" attrs="" name="password" widget="password" id="uuid-A0549754-3F1A-11F1-BB53-FB371ABF1312" display="Password"/>
    <field widget="submit" id="uuid-A054E362-3F1A-11F1-BB53-FB371ABF1312" name="submit" value="" display="Login" attrs="" key="submit"/>
  </form>
</response>