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="92E466C8-7A51-11F0-8956-594962E0087B" encoding="&#x2713;" key="login" method="post">
    <field display="Username" widget="text" value="" key="username" name="username" attrs="" id="uuid-92E4954E-7A51-11F0-8956-594962E0087B"/>
    <field widget="password" display="Password" key="password" attrs="" name="password" id="uuid-92E4DC16-7A51-11F0-8956-594962E0087B"/>
    <field value="" key="submit" display="Login" widget="submit" attrs="" id="uuid-92E52680-7A51-11F0-8956-594962E0087B" name="submit"/>
  </form>
</response>