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="63ADBDFC-3C69-11F1-BC53-3F60C27BCFD7" encoding="&#x2713;" uri="" method="post" key="login">
    <field widget="text" value="" key="username" display="Username" name="username" attrs="" id="uuid-63ADF34E-3C69-11F1-BC53-3F60C27BCFD7"/>
    <field key="password" id="uuid-63AE3A34-3C69-11F1-BC53-3F60C27BCFD7" attrs="" name="password" display="Password" widget="password"/>
    <field key="submit" name="submit" display="Login" attrs="" id="uuid-63AE8214-3C69-11F1-BC53-3F60C27BCFD7" value="" widget="submit"/>
  </form>
</response>