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 uri="" encoding="&#x2713;" key="login" method="post" uuid="61A3838E-73B5-11F0-947B-99F0B03FE236">
    <field id="uuid-61A3B53E-73B5-11F0-947B-99F0B03FE236" attrs="" widget="text" value="" display="Username" key="username" name="username"/>
    <field attrs="" widget="password" id="uuid-61A3FD8C-73B5-11F0-947B-99F0B03FE236" name="password" key="password" display="Password"/>
    <field key="submit" name="submit" display="Login" value="" attrs="" widget="submit" id="uuid-61A449C2-73B5-11F0-947B-99F0B03FE236"/>
  </form>
</response>