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="18BC56EE-3379-11F1-BF76-16A6C27BCFD7" uri="" encoding="&#x2713;" key="login">
    <field display="Username" value="" id="uuid-18BC87E0-3379-11F1-BF76-16A6C27BCFD7" key="username" widget="text" name="username" attrs=""/>
    <field widget="password" attrs="" name="password" display="Password" id="uuid-18BCCB7E-3379-11F1-BF76-16A6C27BCFD7" key="password"/>
    <field value="" display="Login" id="uuid-18BD13E0-3379-11F1-BF76-16A6C27BCFD7" key="submit" widget="submit" attrs="" name="submit"/>
  </form>
</response>