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" key="login" uuid="588D1090-7A98-11F1-991E-B49D25D43659" uri="" encoding="&#x2713;">
    <field display="Username" id="uuid-588D425E-7A98-11F1-991E-B49D25D43659" key="username" attrs="" name="username" value="" widget="text"/>
    <field key="password" id="uuid-588D8386-7A98-11F1-991E-B49D25D43659" display="Password" name="password" attrs="" widget="password"/>
    <field display="Login" id="uuid-588DC8B4-7A98-11F1-991E-B49D25D43659" key="submit" attrs="" name="submit" value="" widget="submit"/>
  </form>
</response>