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="04934414-397F-11F1-84BB-C5BCA9425785" uri="" method="post" key="login" encoding="&#x2713;">
    <field display="Username" id="uuid-0493B764-397F-11F1-84BB-C5BCA9425785" widget="text" key="username" value="" name="username" attrs=""/>
    <field attrs="" name="password" key="password" widget="password" id="uuid-0494008E-397F-11F1-84BB-C5BCA9425785" display="Password"/>
    <field id="uuid-04944C06-397F-11F1-84BB-C5BCA9425785" display="Login" widget="submit" value="" key="submit" name="submit" attrs=""/>
  </form>
</response>