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" encoding="&#x2713;" uuid="4FDFD02C-9140-11F1-BD12-8AFC25D43659" uri="" key="login">
    <field display="Username" name="username" attrs="" id="uuid-4FE004C0-9140-11F1-BD12-8AFC25D43659" widget="text" value="" key="username"/>
    <field widget="password" key="password" attrs="" display="Password" name="password" id="uuid-4FE0499E-9140-11F1-BD12-8AFC25D43659"/>
    <field key="submit" widget="submit" value="" id="uuid-4FE09070-9140-11F1-BD12-8AFC25D43659" display="Login" name="submit" attrs=""/>
  </form>
</response>