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 uri="" key="login" encoding="&#x2713;" uuid="699D9B08-3E51-11F1-8C29-BBBA7F2D798A" method="post">
    <field display="Username" widget="text" key="username" value="" attrs="" id="uuid-699DD4C4-3E51-11F1-8C29-BBBA7F2D798A" name="username"/>
    <field attrs="" id="uuid-699E22B2-3E51-11F1-8C29-BBBA7F2D798A" name="password" display="Password" widget="password" key="password"/>
    <field key="submit" display="Login" widget="submit" name="submit" value="" attrs="" id="uuid-699E6EC0-3E51-11F1-8C29-BBBA7F2D798A"/>
  </form>
</response>