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="46037BF6-240A-11F1-B8B0-55301ABF1312" encoding="&#x2713;" key="login" uri="">
    <field attrs="" widget="text" key="username" value="" id="uuid-4603B012-240A-11F1-B8B0-55301ABF1312" name="username" display="Username"/>
    <field display="Password" name="password" key="password" id="uuid-4603F6C6-240A-11F1-B8B0-55301ABF1312" widget="password" attrs=""/>
    <field name="submit" key="submit" value="" id="uuid-460442DE-240A-11F1-B8B0-55301ABF1312" widget="submit" attrs="" display="Login"/>
  </form>
</response>