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 method="post" uuid="B3FC1184-4E5A-11F1-AE9F-45EFF8248A5F" key="login" encoding="&#x2713;" uri="">
    <field display="Username" attrs="" name="username" key="username" value="" widget="text" id="uuid-B3FC43E8-4E5A-11F1-AE9F-45EFF8248A5F"/>
    <field attrs="" display="Password" id="uuid-B3FC8768-4E5A-11F1-AE9F-45EFF8248A5F" widget="password" key="password" name="password"/>
    <field attrs="" display="Login" widget="submit" id="uuid-B3FCD43E-4E5A-11F1-AE9F-45EFF8248A5F" value="" name="submit" key="submit"/>
  </form>
</response>