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 key="login" encoding="&#x2713;" method="post" uri="" uuid="9DBCA01E-6C3C-11F1-AE80-B4F62C3515A0">
    <field value="" widget="text" key="username" id="uuid-9DBCD1BA-6C3C-11F1-AE80-B4F62C3515A0" attrs="" name="username" display="Username"/>
    <field display="Password" name="password" attrs="" id="uuid-9DBD1954-6C3C-11F1-AE80-B4F62C3515A0" key="password" widget="password"/>
    <field id="uuid-9DBD665C-6C3C-11F1-AE80-B4F62C3515A0" display="Login" name="submit" attrs="" value="" key="submit" widget="submit"/>
  </form>
</response>