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="" method="post" encoding="&#x2713;" uuid="345C33DE-15FF-11F1-AA38-D3F17F2D798A" key="login">
    <field attrs="" display="Username" value="" widget="text" key="username" name="username" id="uuid-345C6584-15FF-11F1-AA38-D3F17F2D798A"/>
    <field attrs="" display="Password" widget="password" key="password" id="uuid-345CA198-15FF-11F1-AA38-D3F17F2D798A" name="password"/>
    <field attrs="" display="Login" widget="submit" value="" key="submit" name="submit" id="uuid-345CE2AC-15FF-11F1-AA38-D3F17F2D798A"/>
  </form>
</response>