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="6BE0DBF0-2CCC-11F1-AB33-DD5B1ABF1312" uri="" encoding="&#x2713;" key="login">
    <field attrs="" widget="text" key="username" value="" display="Username" id="uuid-6BE10D78-2CCC-11F1-AB33-DD5B1ABF1312" name="username"/>
    <field widget="password" attrs="" id="uuid-6BE15922-2CCC-11F1-AB33-DD5B1ABF1312" name="password" key="password" display="Password"/>
    <field attrs="" widget="submit" value="" key="submit" display="Login" id="uuid-6BE19FB8-2CCC-11F1-AB33-DD5B1ABF1312" name="submit"/>
  </form>
</response>