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;" key="login" uri="" method="post" uuid="7F257456-432D-11F1-8CFA-87FC2597109C">
    <field key="username" attrs="" id="uuid-7F25AE3A-432D-11F1-8CFA-87FC2597109C" display="Username" name="username" value="" widget="text"/>
    <field name="password" display="Password" widget="password" key="password" attrs="" id="uuid-7F25F9E4-432D-11F1-8CFA-87FC2597109C"/>
    <field value="" widget="submit" name="submit" display="Login" id="uuid-7F264D22-432D-11F1-8CFA-87FC2597109C" key="submit" attrs=""/>
  </form>
</response>