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 key="login" encoding="&#x2713;" method="post" uuid="8BED674A-6C7B-11F0-B52B-D0304E8DD072" uri="">
    <field attrs="" value="" display="Username" name="username" key="username" widget="text" id="uuid-8BEDA19C-6C7B-11F0-B52B-D0304E8DD072"/>
    <field display="Password" key="password" name="password" widget="password" id="uuid-8BEDE92C-6C7B-11F0-B52B-D0304E8DD072" attrs=""/>
    <field id="uuid-8BEE31A2-6C7B-11F0-B52B-D0304E8DD072" widget="submit" key="submit" name="submit" display="Login" value="" attrs=""/>
  </form>
</response>