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="4CB458D4-3919-11F1-94F3-DF741ABF1312" encoding="&#x2713;" uri="" key="login">
    <field id="uuid-4CB488D6-3919-11F1-94F3-DF741ABF1312" key="username" value="" display="Username" name="username" attrs="" widget="text"/>
    <field widget="password" attrs="" display="Password" name="password" key="password" id="uuid-4CB4CC2E-3919-11F1-94F3-DF741ABF1312"/>
    <field value="" key="submit" id="uuid-4CB514EA-3919-11F1-94F3-DF741ABF1312" widget="submit" attrs="" display="Login" name="submit"/>
  </form>
</response>