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 uuid="DB35BE34-4618-11F1-836C-8DC18F49F76F" key="login" uri="" encoding="&#x2713;" method="post">
    <field attrs="" widget="text" value="" id="uuid-DB35EC60-4618-11F1-836C-8DC18F49F76F" display="Username" name="username" key="username"/>
    <field id="uuid-DB363512-4618-11F1-836C-8DC18F49F76F" widget="password" key="password" name="password" display="Password" attrs=""/>
    <field attrs="" widget="submit" id="uuid-DB368166-4618-11F1-836C-8DC18F49F76F" value="" display="Login" name="submit" key="submit"/>
  </form>
</response>