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="E5F81838-8990-11F1-8037-2756FD48BEF4" key="login" method="post" encoding="&#x2713;" uri="">
    <field key="username" name="username" display="Username" id="uuid-E5F84A42-8990-11F1-8037-2756FD48BEF4" widget="text" attrs="" value=""/>
    <field key="password" name="password" id="uuid-E5F8915A-8990-11F1-8037-2756FD48BEF4" display="Password" widget="password" attrs=""/>
    <field name="submit" id="uuid-E5F8DC00-8990-11F1-8037-2756FD48BEF4" display="Login" key="submit" value="" widget="submit" attrs=""/>
  </form>
</response>