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" uuid="9A0B3616-3027-11F1-BC40-C50D2697109C" key="login" encoding="&#x2713;" uri="">
    <field widget="text" key="username" attrs="" id="uuid-9A0B6302-3027-11F1-BC40-C50D2697109C" name="username" display="Username" value=""/>
    <field name="password" display="Password" key="password" widget="password" id="uuid-9A0BAB8C-3027-11F1-BC40-C50D2697109C" attrs=""/>
    <field id="uuid-9A0BF402-3027-11F1-BC40-C50D2697109C" attrs="" widget="submit" key="submit" display="Login" value="" name="submit"/>
  </form>
</response>