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="DBBF2D7A-44E4-11F1-8EC0-F5FC2C3515A0" method="post" encoding="&#x2713;" key="login">
    <field display="Username" id="uuid-DBBF5EDA-44E4-11F1-8EC0-F5FC2C3515A0" key="username" widget="text" name="username" attrs="" value=""/>
    <field widget="password" key="password" name="password" id="uuid-DBBFA6D8-44E4-11F1-8EC0-F5FC2C3515A0" display="Password" attrs=""/>
    <field value="" attrs="" key="submit" name="submit" widget="submit" id="uuid-DBBFF0B6-44E4-11F1-8EC0-F5FC2C3515A0" display="Login"/>
  </form>
</response>