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;" uri="" method="post" uuid="076E0640-CB21-11F1-9074-45D549691810" key="login">
    <field name="username" display="Username" value="" key="username" widget="text" id="uuid-076E3516-CB21-11F1-9074-45D549691810" attrs=""/>
    <field attrs="" id="uuid-076E6CAC-CB21-11F1-9074-45D549691810" display="Password" name="password" widget="password" key="password"/>
    <field id="uuid-076EB464-CB21-11F1-9074-45D549691810" attrs="" key="submit" widget="submit" value="" name="submit" display="Login"/>
  </form>
</response>