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="03C2C874-CE68-11F1-A731-C9080C50D6CE" encoding="&#x2713;" uri="" key="login">
    <field id="uuid-03C2FD76-CE68-11F1-A731-C9080C50D6CE" key="username" attrs="" extra="" widget="text" name="username" display="Username" value=""/>
    <field widget="password" id="uuid-03C34448-CE68-11F1-A731-C9080C50D6CE" attrs="" extra="" key="password" display="Password" name="password"/>
    <field widget="submit" attrs="" extra="" value="" name="submit" display="Login" id="uuid-03C3911E-CE68-11F1-A731-C9080C50D6CE" key="submit"/>
  </form>
</response>