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="" uuid="0AC536FA-4ED1-11F1-B645-208E25D43659" key="login" method="post" encoding="&#x2713;">
    <field value="" display="Username" name="username" widget="text" id="uuid-0AC56562-4ED1-11F1-B645-208E25D43659" key="username" attrs=""/>
    <field name="password" display="Password" attrs="" key="password" widget="password" id="uuid-0AC5A428-4ED1-11F1-B645-208E25D43659"/>
    <field display="Login" name="submit" value="" key="submit" attrs="" id="uuid-0AC5E532-4ED1-11F1-B645-208E25D43659" widget="submit"/>
  </form>
</response>