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;" uuid="8B5B9BAE-187D-11F1-8BD8-52CD7F2D798A" method="post" uri="" key="login">
    <field attrs="" id="uuid-8B5BD88A-187D-11F1-8BD8-52CD7F2D798A" widget="text" key="username" value="" display="Username" name="username"/>
    <field attrs="" widget="password" key="password" id="uuid-8B5C27FE-187D-11F1-8BD8-52CD7F2D798A" display="Password" name="password"/>
    <field attrs="" id="uuid-8B5C75B0-187D-11F1-8BD8-52CD7F2D798A" key="submit" widget="submit" value="" display="Login" name="submit"/>
  </form>
</response>