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;" method="post" uri="" uuid="28753986-93D0-11F1-BA8C-D15EFD48BEF4" key="login">
    <field value="" display="Username" key="username" widget="text" id="uuid-28756C3A-93D0-11F1-BA8C-D15EFD48BEF4" name="username" attrs=""/>
    <field name="password" attrs="" id="uuid-2875B406-93D0-11F1-BA8C-D15EFD48BEF4" widget="password" key="password" display="Password"/>
    <field id="uuid-2875FD44-93D0-11F1-BA8C-D15EFD48BEF4" attrs="" name="submit" key="submit" widget="submit" value="" display="Login"/>
  </form>
</response>