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;" key="login" uri="" method="post" uuid="052ABF30-408F-11F1-B590-15E90C0019C7">
    <field display="Username" name="username" value="" id="uuid-052AF522-408F-11F1-B590-15E90C0019C7" widget="text" attrs="" key="username"/>
    <field name="password" display="Password" key="password" id="uuid-052B3CD0-408F-11F1-B590-15E90C0019C7" widget="password" attrs=""/>
    <field name="submit" value="" display="Login" id="uuid-052B8A3C-408F-11F1-B590-15E90C0019C7" widget="submit" attrs="" key="submit"/>
  </form>
</response>