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 method="post" encoding="&#x2713;" uuid="ABED4B22-824C-11F1-A83D-BF4D1BBD9EFC" key="login" uri="">
    <field id="uuid-ABED7DAE-824C-11F1-A83D-BF4D1BBD9EFC" widget="text" display="Username" key="username" attrs="" value="" name="username"/>
    <field attrs="" key="password" name="password" display="Password" widget="password" id="uuid-ABEDC6B0-824C-11F1-A83D-BF4D1BBD9EFC"/>
    <field key="submit" value="" name="submit" attrs="" display="Login" widget="submit" id="uuid-ABEE0ED6-824C-11F1-A83D-BF4D1BBD9EFC"/>
  </form>
</response>